Viewscapes from Trim Castle

Scott Stull, archaeology lecturer at SUNY Cortland, looks at the results of an interdisciplinary led by Physicist Michael “Bodhi” Rogers, that he took part in looking at the landscape and viewscapes of Trim Castle.

Trim Castle, in County Meath, Ireland, was built starting in 1187 by the De Lacy family as part of the Anglo-Norman conquest of Ireland. After a long history of conflict, disputed ownership, expansion, change, and decay, the castle was finally abandoned in the mid-sixteenth century when it was described as being full of cattle and dung. The medieval landscape around Trim is remarkably well preserved, including the walls of the town, a fourteenth-century bridge over the River Boyne, a variety of religious institutions, and the farmlands, called the Porchfields, which still have their ridge and furrow plough marks.

In 2016 and 2017, Michael “Bodhi” Rogers led a team of students to digitally record Trim Castle and the surrounding landscape. That scanning project was described in Archaeology Ireland (https://www.jstor.org/stable/pdf/26565802.pdf). The results of that project allowed further study and analysis of the landscape, and specifically the viewscape, of Trim Castle. In a three-way interdisciplinary project, Scott Stull (archaeology), Michael “Bodhi” Rogers (physics), and Michael Twomey (medieval literature) looked at Trim Castle and how the views from the castle were carefully constructed as part of the creation of medieval power and authority.

Trim Castle showing the Dublin Gate (foreground) and Keep (background), image credit Michael “Bodhi” Rogers

The starting point for this study, which is a chapter of the upcoming volume, Bailey, Kinsella, Thomas (eds) Architectural Representation in Medieval Textual and Material Culture (Arc Humanities Press, 2022), is the concept of the cultural landscape. The cultural landscape is how people shape a landscape and put meaning on it, to influence perception, behaviour, and patterns of social interaction. It can be practical, such as food production, or it can be tied to belief systems, such as religious sites, places associated with an ethnic or group identity, or associated with structures of power and authority. Castles, while often associated with military activity, embody most of these elements, and as part of the cultural landscape help create beliefs that support those practices and perceptions.

Viewscapes are a specific aspect of a cultural landscape, and in this case are the views from the castle. At Trim, the castle is placed to oversee the town, roads, bridge, farm fields, and religious institutions. There are a variety of ways to identify and record viewscapes, such as with mapping and GIS systems (for example: Lisa Karen McManama-Kearin, The Use of GIS in Determining the Role of Visibility in the Siting of Early Anglo-Norman Castles in Ireland, BAR British Series 575, Oxford: British Archaeological Reports, 2013). Our study, overseen by Bodhi Rogers, used ground-based lidar to make a 3D record of Trim Castle and its surroundings. The result of the recording is effectively a 3D photograph which you can examine from any angle or point in space. This allows us to see from windows which are inaccessible physically, or from spots which have been lost due to decay or collapse over time.

Digital record of Trim Castle showing the view from the Constable’s Tower toward the Dublin Gate and River Boyne, image credit Michael “Bodhi” Rogers.

While a useful modern tool, viewscapes were a fundamental part of the medieval understanding of castles. We see castles used as viewing platforms, as symbolic places of literal and figurative elevation, and as part of medieval romances where the view from the window represents both the desire and distance of a romantic attraction. In many cases, the lady views the desired knight from the castle window, and the knight is inspired by the glimpse of the lady in the window, affirming the ideals of courtly love. Religious allegories have the castle as a tower of morality, and the viewscape is often overlooking humanity in all its faults and mundanities. By looking at medieval literature, we can gain an understanding of the medieval mindset.

Combining the physical context of a castle with the medieval mindset allows us to gain a more complete understanding of medieval life. The nobility used castles as structures of power and created a cultural landscape which made that system of power seem normal and natural. Castles were a central part of everyday life in medieval Europe, and the lived experience of medieval people was shaped by the created landscapes in and around a castle. At Trim, the castle overlooked the social and economic centres of the community, from the Porchfields to the monasteries. The viewscapes from the castle were specifically created to reinforce the position of the De Lacy family and its successors over the lands and cultural landscape in Trim. Trim castle was the dominant element in both the physical and social landscape.

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Feature Image: Trim Castle Keep and the Sheepgate (foreground), image credit: Scott Stull

Castle Studies Trust is going on its travels in 2022

In its latest round of grants the Castle Studies Trust has awarded £34,000 to five projects including two projects outside the UK. As well as covering a wide geographic area the projects will also undertake a broad range of technics to boost our understanding of castles.

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Dating medieval towers in the hinterland of Medieval Chalkida, Greece:

Stand-alone medieval towers, often part of castles or larger fortifications, are common in Central Greece. Often thought to have been built by the Frankish nobility during their period of dominance between 1204-1470, there is minimal evidence to back this up. By taking wood and mortar samples, the project aims to answer that question.

The present project forms part of the five-year survey ‘Beyond Chalkida: Landscape and Socio-Economic Transformations of its Hinterland from Byzantine to Ottoman times’ (authorised in July 2021 by the Greek State)

Samples will be taken from six towers of wood used laterally within tower walls to increase their structural strength, and mortar from within the core of the walls (both therefore probably

contemporaneous to the original period of construction). Specialists will use dendrochronological and

Carbon 14 methodology for the wood (8 samples), and optical microscopy, Scanning Electron Microscopy (SEM), and X-ray fluorescence (XRF) and diffraction (XRD) Spectroscopy (mortar – 21 samples).

Work will start at the earliest in late 2022 and may not actually take place until next year due to the time it is likely to take to get official permission from the government. 

Kilmacahill, Co. Westmeath

Geophysical survey of deserted medieval settlement close to Jamestown motte & bailey castle. The aim is to understand the morphology of settlement and its relationship with the castle and medieval monastery.

This survey will contribute to a larger project: the Human-Environmental Exchanges in the Landscapes of Medieval Ireland Project (HELM Project) which aims to use a combination of multispectral imaging, UAV drone survey along with geophysical survey to gain a much better understanding of the form of the deserted medieval village through non-invasive methods.

At time of writing it was unclear when the survey will take place.

Pontefract, West Yorkshire

Pontefract Castle: Service area between the kitchen and royal appartments copyright Angela Routledge, Wakefield Council

The project funded will be a geophysical survey of two parts of the castle, which during its history was the main royal castle in Northern England, not previously investigated. The survey will be of two areas of the castle using Magnetometry, Resistivity and Ground Penetrating Radar (GPR)

The focus is on parts of the castle not previously explored by  excavations in the 1980s, especially around the northern ramparts. This area stretches from the Swillington Tower towards the Kings Tower, and includes several earthwork features which remain unidentified, or unconfirmed.  Geophysical investigation is likely to reveal several interesting features including the link wall between the curtain wall and the Swillington Tower, which is unique in that it was built outside the main castle defences.

A second area that we have very little information on is part of the castle known as the “service buildings”. This area has never been excavated and we have very little knowledge regarding the layout or function of this part of the castle. 

As yet it is unclear when the survey will be undertaken.

Raby, Co Durham:

Aerial View of Raby Castle copyright Raby Castle

The Trust will be co-funding the project which aims to improve the understanding of the castle in the medieval period, especially around 1400 in the decades immediately after the licence to crenellate, with a buildings survey and development of a 3D model.

Once a stronghold of the Neville family, it moved into the ownership of the Vane family in 1626 and has been much altered and modernised, especially in the Victorian period, into a palatial family home.  Large sections of the medieval castle survive intact, albeit intersected and extended with more recent architectural additions.

This project seeks to strip back the more recent layers, to make sense of the medieval castle. Our aim is to create a 3D visualisation of Raby Castle in around AD 1400, helping us to visualise and to understand (where possible) how it functioned before the later additions.

In addition to boosting our understanding of the castle, the plan is also to train up a team of volunteers in how to carry out a building survey.

The aim is to start the survey work in April. 

Shrewsbury, Shropshire:

Shrewsbury Motte Top copyright Nigel Baker

This is the third project the Trust has funded on this important castle of the Welsh Marches and is an excavation of the motte top. The first two excavations in the inner bailey discovered that the original inner bailey was a lot smaller than it is today with little room for any substantial buildings, especially the royal hall.

This leaves only the motte and the aim is to understand the structural sequence and assess the character and the status of the buildings there: specifically to identify the royal hall known to be present during the Middle Ages.

The excavation is due to take place in the second half of July.

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Featured image Shrewsbury Castle by air courtesy of Shropshire Council

From Edwin’s hall to Roger’s castle: the elite residence of Laughton en le Morthen, South Yorkshire

Since 2018 the Castle Studies Trust has funded archaeological investigation of the motte and bailey castle at Laughton en le Morthen, South Yorkshire. Led by Dr Duncan Wright of Newcastle University, a scheme of topographic and geophysical survey, followed by targeted excavation, showed that the castle at Laughton had been built on an earlier elite residence—almost certainly the hall complex of Earl Edwin of Mercia referred to in Domesday Book. The results of the fieldwork therefore show us how an existing high-status centre was transformed into a castle in the wake of the Norman Conquest. Using a combination of the evidence gathered in the field, and comparison with similar centres in the country, researchers are able to reconstruct the chronological development of tenth and eleventh-century Laughton with some confidence.

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Laughton-en-le-Morthern as it might have been pre-Conquest (copyright Pighill Illtustrations)

The first reconstruction shows how the elite residence would have looked in the late tenth and first half of the eleventh century. The hall forms the focus of the complex, and this wooden building and any additional structures would have been surrounded by a ditched and fenced enclosure. The protective circuit was found during excavation, and it was even possible to see where wooden posts had been levered out of the ditch when it went out of use. Appended to the hall complex within its own enclosure would have been a stone-built church, a doorway from which survives in the north wall of the present building. Dr Michael Shapland suggests that the first church at Laughton may have been a free-standing ‘tower nave’ construction, for the exclusive use of the aristocracy rather than the wider community. To the east of the hall and church extended settlement and industrial activity, which has been found by previous archaeological investigation. Laughton would have been an important estate centre as well as an elite residence, and was a place where agricultural produce was collected and processed.

Laughton-en-le-Morthern as it might have been post Conquest (copyright Pighill Illustrations)

The second reconstruction depicts Laughton following the Conquest and after construction of the motte and bailey castle on the site of Earl Edwin’s hall. We cannot be sure when the castle was built, but it was most likely completed before the end of the eleventh century when Norman power in northern England was gradually being established. Laughton at this time was a contrasting picture of change and continuity, with some earlier parts of the elite complex maintained and others adapted or removed. Most obviously, the residential parts of the site were destroyed to construct the castle; excavation showed how the ditches surrounding Edwin’s hall were quickly infilled, and the posts supporting the fence were removed. Geophysics also confirms that the 9m-high motte at Laughton was built direct over the middle of the earlier arrangement, and extended over the western part of the enclosure. The church probably kept its original form in the eleventh century, and was only updated in the twelfth century after it came under the control of York Minster. While investment in the church continued through the twelfth century and later, occupation of the castle seems to have been very short-lived. Excavation identified no material from the later medieval period, and the motte and bailey was not enhanced with stone structures. At Laughton it seems that building of the castle was more important than its actual occupation; construction involved the destruction of Edwin’s residence and the raising of something new that demonstrated the establishment of Norman authority. Nearby Tickhill instead emerged as the most important secular centre in the region.  

Phased Plan of Laughton en le Morthern

The phase plan outlines the core components of the two chronological periods recognised at Laughton. It makes clear how construction of the castle destroyed and disrupted the earlier elements of the high-status complex.

Early grave cover

The stone illustration represents about one sixth of an early grave cover with incised decoration, which was analysed by Professor David Stocker and Dr Paul Everson. This type of monument is well-recognised in eastern England and Yorkshire, and at Laughton the stone can be found built into the eastern wall of the chancel. It is a difficult stone to date precisely, but probably dates to the eleventh century and would originally have covered a burial either within or outside of the church.

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All pictures and illustrations ndertaken by Peter and Rosalyn Lorimer of Pighill Archaeological Illustration. 

What happens to your castle when you upset the king?

Slighting is the destruction of a high-status building, and in the Middle Ages it was all about power: damaging property meant exercising power over its owner. Castles were statements of the owners’ strength and status, so damaging one said a lot about how that status had changed, or their strength undermined. One especially interesting example comes from Bedford Castle.

During King John’s war with the barons in 1215–16 one of his captains was Falkes de Breauté. Falkes seized control of Bedford Castle from William de Beauchamp who had joined the rebellion against John.  John died in 1216 and was succeeded by his son, Henry III; Falkes was a key figure at the battle of Lincoln in 1217 which ended the rebellion against royal power and secured Henry’s reign.

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A model at Bedford Museum, showing how the castle may have appeared before the siege of 1224. Photo by Simon Speed (public domain).

After the war ended, Falkes made himself at home in Bedford, expanding the castle and even tearing down two churches in the process. At the same time, William de Beauchamp was trying to persuade the young Henry III to give him back Bedford Castle. Falkes was a powerful man in the royal court, despite making enemies. He clashed with Hubert de Burgh, who was Henry III’s justiciar, and in November 1223 Falkes nearly sparked a new civil war by attempting to seize the Tower of London alongside the earls of Chester and Gloucester and the count of Aumale.

Falkes lost a lot of power and influence because of this failed gambit and in 1224, he was instructed to give up Bedford Castle (along with some other properties). Falkes refused and things came to a head in June when Falkes’ brother, William de Bréauté, imprisoned a royal official at Bedford Castle.

William had been left in charge of Bedford Castle, and Falkes supported his brother’s refusal to release the royal official and surrender the castle to the king. Henry quickly diverted the army he was gathering for an expedition to Poitou to undertake a full blown siege of Bedford Castle. Falkes might have hoped he would get some support from his allies, including the earl of Chester but he was left isolated. An eight-week siege followed, with four attacks on the castle and more than 200 deaths on the side of the royalists. William led the defence of the castle while Falkes fled to safety. Bedford Castle’s garrison surrendered on 14 August and all of them, including William, were swiftly executed.

A drawing from Matthew Paris’ Chronica Majora showing the execution of Bedford Castle’s garrison. Chronica Majora, II, fol. 60 (public domain).

With Falkes asking Henry III for forgiveness, the king had all the power to decide what to do next. He could give Bedford Castle to William de Beauchamp, the previous owner who had been seeking its return for years. He could keep it under direct royal control, or he could slight it – unmaking the castle expanded by Falkes. Henry III chose the destructive option: royal records show that the tower was levelled, the ditches filled, buildings in the outer bailey demolished, and the walls of the lesser bailey lowered. This amount of detail in the historical record is unusual, and where we do have details of castle slighting they are often much more brief and may just cover how much was spent.

Excavations between 1969 and 1972 found evidence of the castle’s destruction, with plenty of rubble strewn across the site. They also showed that the motte was lowered, which wasn’t mentioned in the royal records. The slighting of the castle was an especially destructive event. There are many other castles which were slighted where the destruction was less extensive, or the castle later repaired and rebuilt. At Bedford, that was never an option.

With no allies left, a wife seeking divorce, and having turned over all his lands to royal control, Falkes went into exile. Henry III did eventually grant the castle to William de Beauchamp on the condition that only an unfortified house could be built on the castle.

The destruction of Bedford Castle was a high-profile way for Henry III to reassert his authority after having been challenged by Falkes de Breauté. In the Middle Ages, not every slighted castle was the result of a royal order, but they were the majority. Visiting Bedford Castle today, there isn’t much to see, but in the early 13th century it was a strong stone-built fortress. Its destruction emphatically marked Falkes’ fall from power.

For many slighted castles we often only have archaeological or documentary evidence; at Bedford we are lucky enough that they coincide so we can confirm the documented events took place and give context to the evidence of destruction on the ground.


For more on slighting generally, you can read Richard’s paper in The Archaeological Journal.

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A large and eclectic crop of fascinating applications for the Castle Studies Trust to consider

The deadline for grant applications passed on 1 December. We’re going through the various projects now. Altogether the 12 projects, coming from the UK, Ireland and even one from Greece, are asking for £88,000. They cover not only a wide period of history but also a broad range of topics.

We will not be able to fund as many of these projects as we would like. To help us fund as many of these projects as possible please donate here: https://donate.kindlink.com/castle-studies-trust/2245.

In a little more detail here are the applications we’ve received:

Bedrule, Roxburghshire: The project aims to advance understanding of the role of the castle in the evolution of a well-defined rural community in SE Scotland between the 14th and 16th centuries using a variety of sources including archival research, LiDAR and GIS data analysis.

Berkeley, Gloucestershire: Using a variety of techniques including drone survey and archival research to understand the structure of the castle’s twelfth century shell keep, and then to develop a reconstruction drawing of what it could have looked like at that time.

Cavers Castle, Roxburghshire: Archaeological assessment of earthworks and early castle remains at Cavers Castle, Roxburghshire, which stands as a part-demolished ruin, using a variety of techniques such as geophysical survey, review of documentary and cartographic evidence and LiDAR.

Dating medieval towers in the hinterland of Medieval Chalkida, Greece: Stand-alone medieval towers, often part of castles or larger fortifications, are common in Central Greece. Often thought to have been built by the Frankish nobility during their period of dominance between 1204-1470, there is minimal evidence to back this up. By taking wood and mortar samples, the project aims to answer that question.

Dunoon, Argyll: The project will conduct a geophysical survey of Dunoon Castle mound and its immediate environs to determine the extent, nature and character of buried archaeological remains and will also provide signage to help illustrate what was found.

Galey, Co. Roscommon: Geophysical and topographical surveys to explore the possible motives behind the placement of, as well as  immediate landscape context, morphology and any attached settlement and industrial activity, that occurred at a lakeshore-sited late medieval Gaelic-constructed tower house castle.

Kilmacahill, Co. Westmeath: Geophysical survey of deserted medieval settlement close to Jamestown motte & bailey castle. The aim is to understand the morphology of settlement and its relationship with the castle and medieval monastery.

Millom, Cumbria: Geophysical survey of the area surrounding this 14th century castle to try to understand more about the landscape in which it was built.

Pontefract, West Yorkshire: Geophysical survey of the castle focusing on parts of the castle not previously explored by the excavations in the 1980s, especially around the northern ramparts.

Raby, Co Durham: The aim of the project is to improve the understanding of the castle in the medieval period, especially around 1400 in the decades immediately after the licence to crenellate, with a buildings survey and development of a 3D model.

Shrewsbury, Shropshire: To excavate the top of the motte of this important Marcher castle to understand the structural sequence and assess the character and the status of the buildings there. Specifically to identify the royal hall known to be present during the Middle Ages.

Sleaford Castle, Lincolnshire: Geophysical survey of the to context between the castle earthworks and the principal southern road of the town to establish if further remains of the castle exist in this direction (an area heavily during the 19th century) and establish if there were any links to the town other than the established route along Castle Causeway.

We will not be able to fund as many of these projects as we would like. To help us fund as many of these projects as possible please donate here: https://donate.kindlink.com/castle-studies-trust/2245

The applications have been sent to our assessors who will go over them. You can see how the assessment process works from our blog back in January 2016 https://castlestudiestrust.org/blog/2016/01/17/how-the-castle-studies-trust-selects-its-projects/

Analysing the core samples from Caerlaverock harbour

As the team has now finished its field work at Caerlaverock Castle as part of a project to try and understand the impact of climate change on the changing of the location of the castle in the late thirteenth century, they are now testing the samples in their labs. Here, in two short videos, Tim Kinnaird shows what is involved in the luminescence dating process

Testing the sample

Analysing the sample

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Where Power Lies: the archaeology of transforming elite centres in the landscape of medieval England c. AD 800-1200

Between 2018-2021, the Castle Studies Trust awarded Dr Duncan Wright three small grants to research the castle of Laughton-en-le-Morthen. The aim was to develop an innovative new research methodology to understand the near wholesale replacement of existing lords with incoming Norman tenants-in-chief physically showed itself post the Norman Conquest. Here Duncan explains what that has helped lead to.

In October 2021 the Arts and Humanities Research Council (AHRC) awarded Dr Duncan Wright (Newcastle University) an Early Career Research Grant of £200,000 in support of a new archaeological research project.

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Entitled ‘Where Power Lies’, the project will undertake the first systematic examination of the physical evidence for elite centres in the landscape of medieval England between c. 800-1200AD. Many of these high-status places were developed as castles, and the research aims to identify the motivations behind choosing to build a castle at an existing lordly centre, when a site could equally be perpetuated as a manor house or else abandoned altogether.

The success of Duncan’s AHRC bid is partly thanks to the support of the Castle Studies Trust, who funded his research at Laughton en le Morthen (South Yorkshire) with three separate grant awards totalling almost £5000. The work at Laughton, which comprised geophysical and topographic survey, targeted excavation, and the commission of 3D reconstructions, not only helped reveal the complex history of the site but also acted as an important pilot and proof of concept for the new project. Indeed, Where Power Lies hopes to emulate the success of the research at Laughton, and will include some of the same survey techniques, but it will also scale up the focus to look at the national distribution of aristocratic centres with evidence for investment in both church and residential components.

Survey results of geophysical survey of Laughton-en-le-Morthen

After modelling the national picture, the Where Power Lies team will investigate a carefully selected sample of case study sites, which will be subject to topographic, geophysical, and standing building surveys. These investigations will allow us to reconstruct the biography of the case study locations in detail, and to explore how the character and expression of elite power invested in their residential and ecclesiastical complexes evolved over time. Working with the British Museum’s Portable Antiquities Scheme as an official project partner, the research will also produce a new profile of the artefacts of the aristocrats who built and occupied these sites. 

By undertaking this work, Where Power lies will shift the focus beyond the relatively small corpus of excavated aristocratic sites of the period which continue to form the basis of our understanding. Instead, by embracing a range of digital technologies and non-intrusive survey methods, the projectwill create valuable new datasets at a number of scales. By generating this new information, the team will demonstrate how the transformation of power centres occurred on the ground, revealing whether castles integrated earlier components into remodelled layouts, or whether they caused greater destruction and a more fundamental schism with the past.

Excavation at Laughton showing remains of a ditch that ran next to a possible entrance way to the Saxon lordly centre.

The team will be led by Duncan as Principal Investigator, who will be accompanied by Professor Oliver Creighton (Exeter University) as Co-Investigator, and a Research Associate who will join the team for the duration of the project. Duncan would like to take this opportunity to thank the Castle Studies Trust for their generous support of his research at Laughton en le Morthen, which strengthened the AHRC bid significantly. He hopes the results of Where Power Lies will prove of interest to everyone associated with the Trust.

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You can read more about the Laughton-en-le-Morthen project here: https://castlestudiestrust.org/blog/2020/08/25/landscapes-of-lordship-searching-for-laughtons-anglo-saxon-elite/

‘Sowing Seeds and Reaping Rewards’: relict plant studies at medieval castles

In 2020, the Castle Studies Trust funded Dr Karen Dempsey to undertake an innovative new line of research in castle studies, namely to explore the use of plants in castles in medieval Ireland. In this article, Karen explains what she and her colleague Dr Fiona MacGowan discovered.

Over the course of this Pandemic many people have a newfound or renewed appreciation for the green world that we live in. This might take material form by growing potted plants at home and if fortunate caring for a garden space of your own or somewhat less tangibly, the contemplation of changing seasons in your local park. The (anecdotal) health benefits we might feel from these activities are increasingly underscored by health professionals who assure us of the roles of green spaces in wellbeing. This connection is not a modern phenomenon – plants (and gardens) played a significant role in the diet, healthcare and spirituality of people living as part of castle households.

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Sowing Seeds of Interdisciplinary Work’, the Castle Studies Trust funded project, showed how relict plants can deliver new insights into everyday life at medieval castles. Relict plants – understood to be the descendants of plants grown, cared for and used by (medieval) people – were identified through botanical surveys at four geographically diverse but culturally similar medieval castles: Adare, Co. Limerick, Castleroche, Co. Louth, Carbury, Co. Kildare and Castlecarra, Co. Mayo (as detailed in my previous blog post). As an initial step in researching relict plants, particular attention was paid to archaeophytes, those plants which arrived in Ireland pre-1500 CE. I believed that these plants may have participated in the various colonisation processes of the twelfth century. Their introduction could be linked to new gardening and other health practices especially those related to novel plant medicines which were emerging across Europe at this time but were perhaps previously unknown in Ireland.

Relict Plant Findings

Botanical surveys began during mid-2020 in the very wet months of June and July after a hot May.

Over the course of the survey eight archaeophytes were revealed (Table 1) as well as a range of rare and common native plants. You can read Dr MacGowan’s botanical report here. These findings are significant: four of the eight plants were historically recorded as present in medieval gardens. The plants – comfrey, mallow, milk thistle and hedge mustard – are widely recognised as having medicinal properties (Fig 1). They feature in medieval recipes, continued as part of the tradition of plant medicine captured in Culpepper’s Herbal of 1653 and some, like milk thistle, remain in use today (see Table 1).

Figure 1 Milk thistle at Castleroche; Hedge mustard and Hemlock (Conium maculatum) at Carbury; (pictures by Dr MacGowan)

Table 1 List of Archaeophytes and neophytes at four selected castles in Ireland [1]

Figure 2 Castleroche, Co. Louth, sited for maximum spectacle across a locally significant elevation at the foothills of the Mourne Mountains

Relict Plants in their Castle Contexts

Castleroche was the first site surveyed for our fieldwork. It is spectacularly situated on a locally significant rocky outcrop, framed to the north by the foothills of the Mourne Mountains (Fig 2). The castle has been long understood as a defensive site, believed to have been positioned as authoritative infrastructure to exercise territorial control. Its’ patron, Roesia de Verdun (d.1247) is renowned as the only historically attested woman to have founded a castle in thirteenth-century Ireland This castle while now in ruins was once a busy place with an associated village replete with a weekly market and annual fair. I considered this site to have great potential for relict plants given that historic sources noted the presence of ‘gardinia’ (gardens associated with castles) coupled with the high-status of its’ patron who had a considerable number of estates across England and France. These connections must have given her and her staff access to, and knowledge of, different cultural traditions including gardening and medicinal practices. We were delighted to identify three archaeophytes: Hemlock (Conium maculatum), Mallow (Malva sylvestris) and Milk thistle (Silybum marianum). Milk thistle is a particularly important identification, it is very rare in Ireland and Britain. For medieval people, it was culturally and symbolically tied to the Virgin Mary as well as understandings of fertility and motherhood (Fig 3). This allows us to reconsider the idea of Castleroche only as a frontier site; perhaps there was a diverse resident population for much longer than previously understood. Their health concerns may be represented by the continued occurrence of these plants. Exploring the botanical legacy of Castleroche adds further layers to the story of this complex site.

Figure 3 The Unicorn Rests in a Garden (from the Unicorn Tapestries) 1495–1505. https://www.metmuseum.org/art/collection/search/70007568
Figure 4 Carbury, Co. Kildare: a multiperiod castle complex comprises a motte, an early masonry focal building with later additions including an Elizabethan extension crowned with multisided cut stone chimneys

A less well-known castle but equally deserving of attention is the medieval settlement at Carbury (Fig 4). This multiperiod complex comprises an earthwork castle, a twelfth or very early thirteenth-century masonry castle with later additions including an Elizabethan extension and related gardens (Fig 5). Carbury is entangled with generations of nobles. It acted as a central node in shifting political allegiances and dynastic disputes within the territory of Leinster. The longevity in occupation of Carbury is interesting, it attests – at least in part – to its suitability as a residence. Is this reflected in the immediate castle landscape? Is there a possibility that the early-modern gardens here overlay medieval predecessors? Four archaeophytes were found at Carbury: Hemlock, Comfrey (Symphytum officinale), Hedge mustard (Sisymbrium officinale) and White stonecrop (Sedum album), three of which were adjacent to or within the masonry castle and the fourth – Comfrey – which was found within the hedgerow that forms the historically significant boundary to the castle landscape (Fig 6). These plants are not uncommon, but perhaps their relative ubiquity is reflected in their suitability for use within different plant medicine traditions. Comfrey is particularly notable, known as knitbone, it was widely used as a healing poultice for broken bones throughout medieval medical texts. Pharmacologically, this plant contains allantoin, which promotes the creation of new cells and healing of connective tissue. Relict plant studies at Carbury allows us to reflect on how this place was a home to many different generations of people who participated in caring roles (for plants and people) whilst also being a locus for political tensions.

Figure 5 Aerial Imaging of Carbury Castle with evidence for potential gardens surrounding the castle.
Figure 6 Comfrey (Symphytum officinale) and Hedge woundwort (Stachys sylvatica) noted among other medicinal plants in hedgerow with Carbury Castle in background

With these exciting discoveries at both Castleroche and Carbury, we were very hopeful that the survey at Adare Castle would be equally rewarding. Adare was an important castle as the caput of the Geraldine family. Unlike the other sites, it has been subject to major study including detailed historical and archaeological investigation. Adare Castle was constructed on a pre-Norman power centre from which the castle emerged as a large D-shaped earthwork with a surrounding large ditch and river-fed moat (Fig 7). This later formed the inner ward, which was further enclosed by an external wall to the north-west with a single mural tower and a gatehouse to the south. The outer court is enclosed by masonry walling which is augmented by a ditch to the north and west. At Adare, the grounds are intensely managed, with manicured lawns and ongoing pesticide use (Fig 8). Unfortunately, this was particularly pronounced in the inner ward, the area I have suggested was likely to have contained an enclosed garden. Disappointingly, only one archaeophyte was identified: Weld (Reseda luteola). This dyeplant was predominantly used to give a bright colourfast yellow but also used medicinally to treat chest complaints. A number of neophytes – those plants whose introduction post-dates 1500 CE – were found in the associated areas surrounding the castle as detailed by Dr MacGowan. Species such as Himalayan pheasant berry (Leycesteria formosa) were identified, indicating that relict plants studies can also illuminate the afterlife of the castle when it  played a role as a romantic ruin in the eighteenth-century landscape of Adare Manor. This shows the potential for relict plants studies to add layers to castles stories across their life histories.

Figure 7 Plan of Adare Castle with possible garden (after Dempsey 2021 and O’Keeffe 2015)
Figure 8 Adare Castle, inner ward subject to extensive pesticide use

The final site, Castlecarra, falls lower down the social hierarchy of medieval Ireland than the other three castles but it was still an important baronial residence (Fig 9). It is situated on the eastern shore of Lough Carra. The castle now comprises a large three-storey focal building set within a very compact enclosure which is a later, potentially fifteenth-century addition. The castle was constructed as one part of the c. 1236 Anglo-Norman territorial expansion into Connacht. This site, like the others, has a long history of occupation. An early-modern (sixteenth-century?) house was constructed c. 125m NE of the castle, and the surrounding landscape appears to have been remodelled to suit a new tradition of landscape gardening which included a ha-ha and tree-lined avenue of Hornbeams (Carpinus betulus) (Fig 10). Archaeophytes were not recorded at Castlecarra but numerous native species as well as neophytes were present. This absence is remarkable but perhaps native plants at Castlecarra served the castle household needs. For example, Purging buckthorn (Rhamnus catharticus) was identified. This plant is native but rare in Ireland, and it was used medicinally as a purgative, as the name suggests. The botanical profile of Castlecarra leads to further questions around the transmission and sharing of medicinal and plant knowledge.

Figure 9: Castlecarra, Co. Mayo on shore of Lough Carra
Figure 10 Castlecarra, Co. Mayo: a multiperiod site with medieval castle that forms part of the landscape of an early modern (c. later 16th / early 17th house). Ordnance Survey Map 1925, Castlecarra to lower left and historic home including outbuildings and gardens centrally placed. https://maps.archaeology.ie/HistoricEnvironment/

Research, Heritage Futures and Reflection

One of this project’s aims was to test and refine the methodologies of relict plant studies for medieval castles. In Ireland there are currently 96 species recorded as archaeophytes (but with no established dates of introduction).  Despite the findings of some notable plants, the overall numbers of archaeophytes at the castle sites in ‘Sowing Seeds’ seemed low. Of course, our findings may have been constrained by single survey days, unseasonal weather as well as conservation and management issues – both present-day and historic. Future work is necessary. It is important that sites have the benefit of multiple visits across a wider seasonal survey period. Nevertheless, the baseline botanical surveys of this project will be of use for future research within and outside of castle studies. It has also revealed the need for a detailed survey of archaeobotanical evidence from excavations in Ireland to establish  as far as possible exact introduction dates for particular plants.

Including a wider range of plants and castles over a longer time span would provide comparative material with a greater capacity to capture change over time. Neophytes were noted in the botanical surveys but not part of the research agenda for ‘Sowing Seeds’. Their occurrence at castle sites may be revealing of expanding connections with sixteenth-century colonising and trading practices beyond Europe. Later medieval towerhouses are of particular interest as they are often situated within less managed and therefore within potentially better-preserved landscapes. But equally, native plants should also be included. For example, self-heal (prunella vulgaris) and pellitory-of-the-wall (Parietaria judaica) occur widely and were both used as medicinally. It would be of great interest to compare and contrast different plants at castles whether native, anciently introduced or more recent. Consideration too could be given to the afterlives of medieval castles as romantic ruins as indicated at Castlecarra and Adare. This would develop a wider appreciation of the long lives of medieval castles that continue in dialogue with contemporary communities as heritage today. Relict plant studies enable castle studies to participate in emerging conversation around green heritage and climate change.

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‘Sowing Seeds’ was a novel project – both conceptually and methodologically – I wanted to find a way to explore potential ‘green identities’ of castle households. Accessing the relationships medieval people may have had with their environments (as we might term it today) offers a different way of telling stories about the medieval past whose narratives are often caught into concerns of power, authority or control. By including botanical surveys of relict plants in castle landscapes, we have expanded further the multidisciplinary approach of castles studies. We can show how stories of castles are richly textured: populated by many people and plants over the course of their lives and beyond into their afterlives as romantic ruins and archaeological monuments. Doing this for the first time meant engaging with new material and unfamiliar sources from archaeology, history, and medical knowledge to heritage and folklore. This wide-reaching research methodology is a core strength of this project. It enables a dialogue between different disciplines that are traditionally separate or rarely integrated. These findings are a beginning: they encourage new avenues of future research on castles households relating to human-plant relations, plant medicine and related concepts of care. The results also invite conversations with heritage agencies regarding site management and conservation practices of both biodiversity and past vegetation. Rather than offering conclusive findings, we have revealed tantalising hints and a vast array of potential new avenues in which to take this research.

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Acknowledgements

This research was generously funded by the Castle Studies Trust. Their support enabled new ideas to be explored. As an early career researcher being awarded a grant to undertake (potentially) interpretatively risky work is a wonderful opportunity.

Helpful commentary and feedback was received from two assessors whose insights improved this report.

Thanks to Dr Fiona MacGowan for participating in this research project and carrying-out the botanical surveys at the selected sites.

Thanks to the landowners of Castleroche, Castlecarra and Carbury, and the Office of Public Work who manage Adare, for access to the sites for this project.


[1] Dates in the table refer to the first historic botanical record of these plants in Ireland and Britain, and * denotes their occurrence in lists of species included in medieval gardens (Harvey 1981)

What lies beneath: Results from two geophysical surveys at Warkworth Castle, Northumberland

Dr Will Wyeth, English Heritage property historian and project lead on the two geophysical surveys the Castle Studies Trust funded on Warkworth Castle, looks at what the surveys reveal and equally importantly don’t reveal about the castle.

The results from two geophysical surveys in and around Warkworth Castle have now been digested and synthesized. The first survey sought to explore evidence for subsurface remains of the castle earthworks. The second survey examined a field called St John’s Close, sited within a corner of the medieval park attached to Warkworth Castle. Both surveys are intended to inform English Heritage’s on-going project to improve the way the history at the castle is explored and shared with visitors. Here, we share some of the highlights of these surveys: for the full discussion of the results, you can read the full report here.

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Figure 1. The Great Tower at Warkworth Castle (built late 14th century), situated atop an earthen mound (motte). View looking east from outside the embrace of the castle curtain walls (visible on the right). © Will Wyeth

The first survey targeted three areas of the castle. The first was the top of the earthen mound, or motte (see a phased site plan here). Our aim here was to establish the presence or any subsurface features which may relate to any structures pre-dating the present late 14th-century Great Tower (Figure 1). Our results here were inconclusive: the subsurface examination certainly revealed a feature, perhaps a drain or path, associated with the postern of the present Great Tower (Figure 2). Other features may represent building or demolition rubble, but it’s not clear which.

Figure 2. The blocked postern of the present, late 14th-century Great Tower, giving access from a storage area within the tower to the motte-top. A drain or path leading from the postern down the slope of the mound was detected in the recent geophysical survey of the mound.  © Will Wyeth

The second area of the castle earthworks to be examined was a portion of the castle’s raised bailey platform, east of the enclosing curtain wall presently dated to the late 12th-early 13th centuries. The earthworks of the bailey of Warkworth Castle pre-date any stone buildings known to survive at the present castle: this is because the earliest structures – among them the curtain wall – do not embrace the entirety of the earthworks (see a phased site plan here).

Figure 3. The unenclosed, eastern portion of the raised bailey platform at Warkworth Castle, looking south from the motte slope. The  multi-angular tower with two-storey arrowslits on the right is the Grey Mare’s Tail Tower, built in the 1290s. © Will Wyeth

Our research question here was to establish why this eastern portion of the bailey was left unenclosed, upon the construction of the enclosing curtain wall. Here, again, our results were inconclusive with regards our research question, though the survey did throw some light on possible uses of this space in the later medieval-early modern period. The survey detected a trampled path from the area east of the eastern curtain postern, south of the 15th-century stable building, heading northwards, respecting the projecting mass of the 1290s Grey Mare’s Tail Tower (see feature 14, Figure 4 ). The relative phasing of this feature does not tell us a great deal, except that the path may post-date the construction of the Grey Mare’s Tail Tower. It may also suggest that the postern in the curtain wall, currently dated to the late 14th century, could be coeval with the Grey Mare’s Tail Tower, or it may have replaced an earlier iteration. This is the earliest possible arrangement, as the path could also be more recent in date. 

Figure 4. Interpretative plan of Warkworth Castle, with features from geophysical surveys recorded, north at top. Map Data: Ordinance Survey © Crown Copyright

The final portion of the castle earthwork survey sought to establish the location and extent of features within the enclosed portion of the bailey (‘Area 1’, see Figure 4). Uncertainty remains as to the configuration of the bailey before a major phase of construction presently dated to the 15th century. This substantial campaign of building incorporated the construction of the compressed collegiate church (perhaps never completed) with exquisite covered passage, and a comprehensive rebuilding of the eastern portions of the Great Hall, Chamber block and chapel in the bailey, of which the finest surviving portions are the Lion’s Tower and the Little Stair Tower (Figure 5).

Figure 5. The enclosed portion of the bailey at Warkworth Castle, looking south. The remains of the collegiate church are in the foreground; the Lion Tower, rich in heraldic ornamentation, is on the right, and beyond it is the distinctive spire of the Little Stair Tower. Feature 2 is located approximately between the two picnic benches, in the centre left of the image. © Will Wyeth

The most substantial, and perhaps important, finding of the geophysical survey of the earthworks relates to feature 2 (see Figure 4). Located in the south-eastern quarter of the bailey, it comprises a substantial segment of buried wall or robbed wall foundations, approximately 22m long (on an east-west axis) and c.2m thick. Though the feature stops short of the bailey curtain wall here, it clearly blocks the east curtain postern already mentioned, and therefore may very well pre-date it. The massive character of this feature suggests it may have belonged to a substantial, multi-storey building. Feature 2 also appears to meet the curtain wall at a right angle, with one possible implication being that it may have formed one wall of a square- or rectangular-plan building, which was demolished to make way for the present curtain wall. Curiously, although the castle is not very extensive, the concentration of known high-status buildings from the later 12th-century onwards is on the bailey’s western side. If feature 2 relates to a high-status building, it is unusual for being located in the eastern part of the bailey. Several other features were located within the bailey; these are discussed in the full report.

Figure 6. Satellite view of Warkworth Castle and adjacent park. The area in red, encompassing the surviving park boundary and the park’s south-east corner, was the subject of geophysical survey. © Google Earth, annotation by Will Wyeth

The second area examined by geophysical survey comprised part of the park of Warkworth Castle. The earliest record of the park is dated to the 13th century, but a park at Warkworth may have existed earlier still. Hogdson’s History of Northumberland, which assembled extensive records from the Alnwick Castle archives and elsewhere, offers a rich picture of the late medieval administration of the park, with records of repairs, infringements, agistments (a one off payment by a livestock owner to graze on the land of the landowner) and the collection and sale of underwood all recorded in 15th-century documents. The earthworks of the castle park have yet to be comprehensively mapped, but a portion of the south-east corner of the park, fossilizing the boundary of an historic field within the park called St John’s Close, does survive (see the previous Warkworth blog post for photos of these). This field was chosen as the target of geophysical survey to determine the survival of any features or buildings associated with the medieval park. Research on castle parks has demonstrated that they could feature a broad variety of structures, and were not simply enclosed areas. A further research goal was to ascertain the precise location of a documented park gate attested in a 17th-century estate map (Figure 7), which could represent the closest point of access into the park enclosure from Warkworth Castle.

Figure 7. Estate map of the 1620s, depicting Warkworth Castle (lower left), village and park boundary. The postulated park gate is the round-headed opening roughly half-way along the park’s eastern boundary, between the castle and St John’s Close. Top is south. From Hodgson’s A History of Northumberland, V, opposite p.136 (archive.org. link here).

Unfortunately, the survey results did not yield answers to the questions we posed regarding any medieval features within the area of parkland surveyed, nor was it possible to decisively establish the location of a park gate. The most significant find was in the form of several round features, either enclosures and/or hut circles, which are very likely prehistoric in date (Figure 8). A walk-over of this area confirmed that they were not visible at ground surface level, being concealed by ridge-and-furrow deemed to be medieval in date. The largest of these, feature 2, is also bisected by a former field boundary depicted on the early 17th-century estate map mentioned earlier, though not shown on either of the 1st edition OS maps. A possible caveat to the lack of medieval finds is feature 9 (see Figure 8); this could be a path or hollow-way, and it appears to cut (and therefore post-dates) the ridge-and-furrow. As the eastern terminus of feature 9 is close to the edge of the park boundary, it may point to the location of the suspected park gate. Its western extent appears to respect the trajectory of the lost field boundary, and there it may represent an early modern, post-medieval feature. For a fuller account of the features revealed by the survey, see the full report.

Figure 8. Interpretative plan of St John’s Close south-west of Warkworth Castle, with features from geophysical surveys recorded, north at top. Map Data: Ordinance Survey © Crown Copyright

Although neither survey succeeded in yielding clear evidence to help answer all the research questions we asked at the beginning, they certainly improved our understanding of both areas examined. In the case of the castle earthworks, it is clear that a substantial building once occupied the south-eastern portion of the bailey, and it is now possible to map this accurately in relation to surface-level features. In the case of the park, we can tentatively identify the approximate location of a gate into the park, though we cannot be certain it is medieval in origin. More work may allow us to ascribe dates, or relative phases, to these features.

For English Heritage’s interpretation project at Warkworth Castle, these surveys have been invaluable, and we are grateful for the support of the Castle Studies Trust in pursuing them – especially during the difficulties in completing the surveys resulting from the Covid-19 pandemic. Going forward, the standing buildings of the castle have also been subjected to a separate, detailed analysis, and it is hoped that the bringing together of these two sets of data will offer a fresh understanding the site. Although the research is ongoing, a preliminary integration of both appears offers some new and tantalising ideas about the history of Warkworth Castle. These will inform our presentation of Warkworth Castle to the public, and improve our collective understanding of one of England’s finest castles.

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You can view the full report here: https://www.castlestudiestrust.org/Warkworth-Castle.html

Old Wick – Back in the Lab

In September 2021, Dr Coralie Mills and Hamish Darrah from Dendrochronicle along with a team from Historic Envirnoment Scotland led by Rachel Pickering removed an original timber from the Great Tower at Old Wick in Caithness to help date the castle.

Following on from the successful removal of the piece of wood Dr Coralie Mills and her colleague Hamish Darrah have taken the wood back to their lab for further analysis. In three short videos they explain what they have been doing and what they have found.

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In the first video Coralie explains how the sample was prepared for testing:

In their second video Hamish explains how they managed to work out which type of wood they had removed:

Finally, Coralie explains what the implications are of Hamish’s findings and what they plan to do next:

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With thanks to both Coralie Mills and Hamish Darrah for filming the videos and Rachel Pickering from HES for editing them.