Category: England

Kings, barons, miners and inedible pigs: the great siege of Rochester in 1215 now on video!

Dr Peter Purton FSA, leading expert on medieval siege warfare examines one of the most famous British medieval sieges, that of Rochester in 1215.

The great donjon of Rochester castle (Kent) is still visible from miles around – including from the Eurostar. It stands above a bridge across the tidal waters of the river Medway and that was one reason why it was subject to a famous six- week siege which ended when an entire corner of the great tower was brought crashing to the ground, leading to the fall of the castle on 30 November 1215.

This was the first big battle in the civil war that broke out between King John (1199-1216) and the barons who had forced him to seal Magna Carta in June of that year. The king got the pope to declare it null and both he, in the south, and the barons, based in London, began to gather soldiers. We know a great deal about what happened because contemporary chroniclers, including eyewitnesses and those closely associated with men fighting there, wrote it down; and because some government records survive. We know the names of the nobles and many of the knights on both sides, of the engineers paid to construct the King’s five stone-throwing siege engines, and the master miners from the Forest of Dean who with their team (altogether 13 miners) undermined first the wall of the bailey and then the great tower itself.

Sappping a tower: Foix castle museum

The first castle was built after the Norman conquest but the great tower dated from 1127 when it was built for the archbishop of Canterbury, then William of Corbeil, who shared ownership and use with the crown. It is the tallest keep in the British Isles (125 feet, 38 metres) and unusually boasts two floors above the main level and basement below, divided vertically by a spine wall that gave access to the castle well. Richly provided with latrines and comfortable chambers, two spiral staircases, beautifully decorated stonework, it was a place fit to entertain king or archbishop. But in 1215 none of this mattered, archbishop Stephen Langton ignored John’s demand to hand it over and instead allowed rebel baron William de Albini and 60 or 80 knights, their retinues and archers and crossbowmen, to take possession.

Interior of Rochester’s keep showing the rebuilt corner. To the left is the spine wall the defenders fell back to after the sapping

Control of the ancient bridge over the Medway was vital for both sides, and so it became John’s first target once he had gathered an army of several thousand experienced fighters mainly from Flanders, Poitou and Gascony. The defenders resisted every attack for weeks, inflicting many casualties on John’s men. In the end the besiegers turned to their miners, who first broke through the bailey wall (we don’t know where), then, using the grease from 40 slaughtered pigs (‘of the kind not fit for eating’) as an accelerant to burn the props they had used to prop up the masonry while they sapped  the south east corner turret of the great tower, brought it crashing down. The defenders retreated behind the spine wall but had run out of food so surrendered. King John wanted to hang them all  but was dissuaded by his own captains who didn’t want to meet the same fate if the wheel of fortune should turn against them.

To this day one can see the join on the sides of the donjon where the wall had to be rebuilt after the siege.

In 2015 the Castle Studies Group (www.castlestudiesgroup.org.uk) held a conference there to mark the 800th anniversary and I presented a short paper analysing the siege. Now, following an invitation from across the Atlantic, an extended and illustrated version of that talk can be viewed at:

Hornby Castle Project – from Pre-Conquest to War of the Roses and beyond

Castle Studies Trust’s expert grant assessor Erik Matthews reveals the findings of the 10 years (and counting) excavation he has been directing of Hornby Castle in Wensleydale North Yorkshire.

  A programme of archaeological fieldwork involving excavation with some building recording has been in progress since 2010 with the new season due to commence as soon as conditions will allow. It has focussed on the site of a moated hunting lodge of the Dukes of Brittany referred to in a Charter dated to 1115. It was subsequently used as a “pleasaunce” for first the Nevilles of Redbourne in Lincolnshire and later the Conyers  before its destruction in a military attack at the end of the Wars of the Roses.

Pre-conquest origins

  Recent work has focussed on the kitchen where oven structures have been recovered with traces of a wooden tank for holding live fish prior to their cooking. A stone sink with a wooden drain leading into the moat to the north has been found with a cherry stone recovered from it. There was also traces of a fireplace which collapsed with the remainder of the building sending a plume of ash into the room. Following the discovery of residual artefacts of Pre-Conquest date from the kitchen floor including a carved walrus ivory handle, a sherd of Pre Conquest glazed pottery made in Northern Germany and piece of  fine worked bone casket, it was decided to section the floor to find evidence of an earlier structure beneath. Evidence of a wooden floored, stave walled structure was found which may be associated with the immediate Pre-Conquest tenant Arnekill who was of noble birth and related to the Earls of Northumbria.

   Examination of the remains of the kitchen front wall yielded evidence of the ferocity of the destruction of the complex with the recovery of a large stone cannon ball (below)from a heavy calibre cannon which had become embedded in it. Close by a carved Nidderdale marble capital was found which has been dated to the 12th Century and which may have come from a chapel in nearby.

Stone canon ball found in the kitchen front wall (copyright Erik Matthews)

The Great Tower – post medieval survival?

The 2019 season focussed on a section of the moat which located traces of a stone bridge abutment and wooden foot bridge surviving in the moat silts heading towards an earthwork in an adjacent field.  The main discovery has however been evidence of an ashlar clad stone Great Tower. Two wall foundations 2.8 metres wide sunk into a rock clad mortar embankment rising some 1.2 metres have been located to the north and west. The north wall includes the remains of a robbed out spiral stair. Internal features include an internal chamber with very thick walls which may have been a strong room, also a corridor from the floor of which an iron knife was recovered blade down! Evidence of an external doorway heading to the north towards the area of the most bank has been recovered and a small section of roofing lead together with lime slurry suggests an impressive structure. The close proximity of the foundations to the modern ground surface suggest tantalisingly that the structure may have survived as a ruin into the relatively recent past.

For more information about the excavation please contact Erik Matthews on rubyna dot matthews at btinternet dot com

Shrewsbury Castle: a 2020 vision, from Saxon habitation to C18 landscaping?

Project lead for the Shrewsbury Castle excavations Dr Nigel Baker looks forward to the forthcoming excavations at the castle, hopefully this year, funded by the CST

Last year, the Castle Studies Trust excavation – the first ever to have taken place within the walls of Shrewsbury Castle – produced three headline conclusions. The first was that the work of the young Thomas Telford there for his client, William Pountney M.P. in 1786-90 was, sadly, more destructive of the medieval original than had previously been recognised. The extent of his restoration of the house (now the Soldiers of Shropshire Museum) and the curtain walls has long been known. What wasn’t appreciated was that standing walls of ruined buildings and a 13th-century tower on the motte top were destroyed and reduced to their footings, and the interior of the inner bailey was, it seems, scraped flat, producing a lovely level lawn at the expense of any archaeological deposits overlying the natural gravel of the hilltop. Despite this, infilled negative features (pits and ditches) cut into the gravel survived and were found by our excavation trench. As a result, our second headline conclusion was that the motte was ringed on its landward side by a massive ditch, twelve metres wide: what we know as the inner bailey must, in the early Middle Ages, have been little more than a barbican defending the end of the bridge giving access up the motte.

C18 Remodelling?

But the extent of Telford’s work raises a question, first put to the archaeological team by Martin Roseveare, our geophysicist: if Telford had the inner bailey levelled flat, where did he put the proceeds, meaning the scraped-up earth and debris? Could the apparently well-preserved medieval ramparts ringing the bailey actually be down to the young Scottish civil engineer, rather than impressed English labour under the whip-hand of William the Conqueror’s henchmen? This is one of the leading questions that a second season of excavation at Shrewsbury Castle hopes to be able to answer, by digging on part of the western rampart known to be already disturbed by former Victorian greenhouses.

High Status Saxon Living

There are, however, other at least equally compelling reasons for excavating on this site. The third headline conclusion of the 2019 trench was that there was pre-Conquest activity within the area of the inner bailey. This was demonstrated by a pit, pit 20, containing Stafford-type ware (well known in late pre-Conquest Shrewsbury) and a type of pottery known as TF41a, an import up the Severn from Gloucester, never seen before in Shrewsbury. The question is, what was it doing there?

Top piece Rim of type 41a Saxon pottery from Gloucester
Lower piece: Rim of Stafford ware Saxon pottery

Shrewsbury is one of those castles listed in Domesday along with the destruction it caused to its ‘host’ shire town. Construction of Shrewsbury Castle took out 51 tax-paying tenements, a quarter or a fifth of the total built-up area, to the economic distress of the remaining inhabitants. Many of the destroyed plots will have lined the strategically important Chester to Hereford road that passes through the outer bailey. However, looming over the road and its plots, and the main gate through the pre-Conquest defences, was the hilltop on which the castle would come to be built. And on it, overlooking the gate, most likely on the Victorian greenhouse site, was the Church of St Michael, a church that became the castle chapel, but was listed in Domesday between the entries for two of the town’s pre-Conquest minsters and was served by two priests later in the Middle Ages, when it was a royal peculiar, exempt from episcopal oversight. This need not necessarily all add up to a pre-Conquest church – but the chances are very strong that it does, and that this church, which, overlooking the town defences,  may have had some kind of defensive role, was part of the context of pit 20.

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The clues are beginning to point to a high-status site, probably enclosed, with its interior ground level two metres above that of its neighbours, and its own church. For an analogy, one could do worse than look to Wallingford, whose castle in the north-east corner of the Saxon burh had probably taken over and re-fortified a royal site of some kind, possibly housing government functions, perhaps a mint, and a garrison of housecarls. Or one might look to Oxford, where St George’s Tower is now generally thought to be of pre-Conquest date. Shrewsbury seems to be joining the list of Norman town castles established on sites of political, not just tactical, importance.

But archaeology can be frustrating. While we hope that excavation of the Victorian greenhouse site in the west rampart may yield insights into the extent of Thomas Telford’s landscape gardening, the foundations of a pre-Conquest church and further clues to a high-status or even royal site preceding the castle, by 2021 the excavation team may well be singularly well-informed experts on…Victorian greenhouses.

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Our five projects for 2020

The results are in, we’ve decided which projects we will be funding for 2020.

But before we get to the announcement, we want to thank all the applicants who proposed projects. It was a difficult decision, with exciting and innovative approaches to a group of fascinating castles. This year marks a milestone for us: we are award £30,000 across the successful projects which is the most we’ve given in a single year.

So without further ado, here are the five projects we will be funding in 2020. We hope you are looking forward to discovering more about them.

Lincoln Castle

Photo by Gustavo Faraon, licensed CC-BY-NC 2.0

The project will develop a reconstruction drawing of the castle, as it would have been in the latter part of the 12th century, founded by William the Conqueror, in the second half of the 11th century.

Shrewsbury Castle

We will be funding a second year of excavation, following on from 2019, this time to understand the rampart of the inner bailey.

Sowing the Seeds

Castlecarra is one of the sites to be investigated. Photo by Karen Dempsey.

The aim of the project is to try and understand better everyday life in castles by seeing if there are any surviving plants at four Irish castles that were planted, grown, and cared for by medieval people.

The Wirk

Could the Wirk be a Norse castle? Based on the island of Rousay, this stone tower is situated close to the old parish church and recently discovered Norse Hall. However, no one knows what this tower was used for or even when it was built.

Warkworth

 Photo by Karl Davison, licensed CC-BY-NC 2.0

Using various forms of geophysical survey to try and understand the subsurface features for the former caput of the Earls of Northumberland.

Donate regularly for invitation to exclusive site visits

Regular donors will be invited to all exclusive visits to the projects we fund.

Those who are able to donate £500 a year or more (excluding Gift Aid) will also have the opportunity to attend our annual special castle visit to major/privately owned castles. In 2020 this will be at Edinburgh Castle on Saturday 6 June where we will visit parts of the castle not open to the public.

Any new donations by standing order or payroll giving will be matched by a generous supporter for the next two years up to a maximum of £2,000 a year in total.

You can donate regularly via payroll giving or by setting up a standing order. Please return the form to the address on the forms, with the gift aid form if applicable.

A Large and Eclectic Crop of Fascinating Applications for the Castle Studies Trust to Consider

The deadline for grant applications passed on 30th November. We’re going through the various projects now. Altogether the 13 projects, coming from England, Ireland, and Scotland are asking for over £88,000. They cover not only a wide period of history but also a wide range of topics. In a little more detail, here are the applications we’ve received:

Bamburgh, Northumberland

Photo by Thomas Quine, licensed CC BY 2.0.

The main aim is to recover evidence for the base natural topography around the approach to the main gate of the once royal castle, from the area of the medieval village, and explore how this was altered, presented and exploited to create a sense of theatre for visitors to the site.

Berkhamsted, Hertfordshire

Photo by Sean Wallis, licensed CC BY NC 2.0.

A geoarchaeological auger survey of the moats that surround this former royal castle and palace of Thomas Becket. The survey aims to answer such questions as what were the moats original profiles, when were the moats filled and how do the two moats compare with each other.

Dunollie, Argyll

Photo by Paul Lloyd, licensed CC BY NC SA 2.0.

To try and understand the date of the construction of the castle owned by the MacDougall clan through various through buildings and materials analysis including radiocarbon dating and mortar analysis.

Fraoch Eilean, Loch Awe

Photo by Andrea Hope, licensed CC BY SA 2.0.

To try and understand the date of the construction of the former royal castle through various through buildings and materials analysis including radiocarbon dating and mortar analysis.

Hoghton, Lancashire

The aim of the project to continue the work the CST funded in 2019 with excavations and building survey. Further excavations will try and understand the purpose of the structures found in the 2019 excavation season and if they were related to the original great tower.

Holme Pierpont, Nottinghamshire

To build up an understanding of this late medieval great house, never previously researched. The work will include a mixture of desk research, building survey and geophysical survey of the parkland surrounding it. The house is the most complete of the three late medieval brick-built houses in Nottinghamshire.

Lincoln, Lincolnshire

Photo by Ben Keating, licensed CCY BY NC SA 2.0.

To develop a reconstruction drawing of the castle as it would have appeared in the second half of the 12th century. Lincoln Castle was founded by William the Conqueror in the late 11th century.

Shrewsbury, Shropshire

To fund a second year of excavation, this time to understand the rampart of the inner bailey. The geophysical survey carried out in the 2019 suggested there could be remains of buildings there, possibly even a late Saxon church. Shrewsbury was a very important border castle up until the 13th century and frequently used as a base for English raids into Wales.

Sowing the Seeds

Hortus conclusus depicted by Meister des Frankfurter Paradiesgärtleins

The aim of the project is to try and understand better everyday life in castles by seeing if there are any surviving plants at four Irish castles that were planted, grown and cared for by medieval people. The research will involve ecological surveys at each location.

Strongholds of Wessex

Photo of Silbury Hill by Greg O’Beirne, licensed CC BY SA 3.0.

The aim of the project is to understand the military organisation of the northern part of Wessex (Wiltshire and West Oxfordshire) from the transition from Saxon to Norman rule between the 9th and 12th centuries. The work will involve documentary research, landscape and place name surveys. Sites examined will include Castle Combe, Cricklade and Silbury Hill.

The Wirk, Orkney

Rousay - The Wirk

Could the Wirk be a Norse castle? Based on the island of Rousay, this stone tower is situated close to the old parish church and recently discovered Norse Hall. However, no one knows what this tower was used for or even when it was built. The work would involve a geophysical survey of the surrounding area as well as two trial trenches to try and find dating evidence.

Thermal Imaging of Castles

A thermogram of Cirencester Roman amphitheatre by Dr John Wells, licensed CC BY SA 4.0.

To test how useful thermal imaging could be in understanding castles. The thermal survey using a FLIR camera of two castle facades in different climates. within the UK—Caisteal Uisdein, on the coast of Loch Snizort, and a castle farther south and slightly inland, Castle Rising.

Warkworth, Northumberland

Photo by Barry Marsh, in the public domain

Using various forms of geophysical survey to try and understand the subsurface features for the former caput of the Dukes of Northumberland. The survey will focus on the bailey inside the 12th-century curtain wall as well as the strip of land outside but on the early earthwork castle, the motte and field near the entrance to the castle.

The applications have been sent to our expert assessors who will go over them. And if you want to know more about how the assessment process works, we have a brief summary.

The Simple Act of Hospitality the Tudor Way

Summers for me always mean getting together with friends and family for BBQs and picnics. The simple act of hosting a party comes with a range of logistics for the host to manage: buying, cooking, and serving food, providing entertainment, ensuring everyone is enjoying themselves, along with more practical tasks such as cleaning communal areas that guests will frequent. The Tudor period did not entail many modern-style BBQs in the backyard; however, hosting celebrations was a large part of elite culture. Scholars of hospitality in the medieval and early modern periods have long recognized its social and cultural significance. Generosity was a Christian value and was expected from those who could afford to provide it.

Hans Holbein the Younger, ‘Henry VIII dining in the great chamber’ (c. 1548). Photo from the British Museum, licensed CC-BY-NC-SA 4.0.

Hospitality leaves very little trace in architectural remains, so historians must turn to documentary records to investigate how castles were used to host feasts and celebrations. Household Books are one such record that provide a clue into the extravagance and hierarchy of these revels. These documents were created as a sort of ‘how-to-guide’ for management and maintenance of a large residence. Unsurprisingly, households played a main role in the performance of hospitality and therefore, protocols for dining and hosting are a common feature in these records. King Edward IV’s Liber Niger is one of the most used sources for demonstrating the splendour of royal households, and many of the large noble households of the late medieval period take some instruction from the king. For instance, Henry Percy, the fifth earl of Northumberland (1477–1527) kept a detailed Household Book for the year 1512 in which daily ritual and splendour are of the foremost concerns.[1] The Northumberland Household Book (NHB)is specifically for the earl’s main castles of Wressle and Leckonfield in Yorkshire.[2] It gives exact numbers of servants, their role and responsibilities, instructions for dining etiquette, and seeing to the lord and his family. In a theoretical sense, it provides us with an image of the perfectly run noble household.

A quadrangular stone castle with a river in the foreground, a village to the right, and gardens next to the castle and behind it.
Wressle Castle by Peter Brears, based on the 2014 survey. See the CST blog ‘Re-imagining Wressle Castle’.

One of the concerns in the NHB is the procedure for eating. It tells us that the earl of Northumberland sat at the high table with his wife, Catherine Spencer, and his son and heir, Henry Percy. Northumberland’s other two sons, Thomas and William, served the food for the high table.[3] The NHB continues to list a total of sixteen people to attend the needs of the lord and his family, including ‘the childe of the kechinge that shall help the saide Yoman or Groome to dresse my Lords Metes and Servyce for the Howsehold And to be ath the Revercion’.[4] After the list of those serving the high table, the NHB lists the people who should sit at each of the tables in the great chamber and subsequently in the great hall. Controlling where people sat, the food that they ate, and the order of service was one way for a lord to visually display and reinforce the social hierarchy on a daily basis.

Text Box: Figure 3: A section from the Portrait of Sir Henry Unton (c. 1558 - 1596), held at the National Portrait Gallery, London
A section from the Portrait of Sir Henry Unton (c. 1558 – 1596), held at the National Portrait Gallery, London

Some days called for special feasts and the NHB isolates the principal feasts of the year when the household could expect a ‘great repaire of Straungers’ arriving at the castle. These days include: Easter, St George’s Day, Whitsun, All Hallows Eve, and Christmas. These celebrations did not just provide food for guests, but entertainment as well. For the Twelfth Night celebrations at Wressle in 1512, the ‘hoole chappell’ was directed to ‘sing wassaill’, a carol celebrating the service of the wassail drink at the evening banquet.[5] On All Souls Day, Northumberland’s chapel performed the ‘responde callede Exaudivi at the Matyns-tyme for xij virgyns’.[6]

In an earlier blog post for the CST, Dr Kate Buchanan explored ideas of a social gathering around Christmas time at Huntly Castle and the sensory experience that those present might have experienced. She demonstrates that hosts could – and oftentimes did – blend business with pleasure when it came to hospitality. This is definitely the picture from other fifteenth- and sixteenth-century household books. Celebratory periods brought family, peers, political allies, and even tenants together under one roof. Castles facilitated the gathering of a community and it was the space in which relationships could be forged. 

Hospitality was just one way that castles were used to promote and uphold the social hierarchy of Tudor England. We must remember that hospitality was not just an act that the host actively placed on the passive guest. It was very much a performance with the household servants as many of the main players. Servants prepared and served the food, attended to guests, and ensured that everyone adhered to protocol. Castles played a much greater role than being the theatres on which this performance took place. The great hall and the household chapel were key areas in the castle that hospitality was dispensed. These spaces brought everyone in the castle together for entertainment and allowed for interaction of people across the social and gender hierarchy. These interactions were of course heavily regulated. Although castles accommodated people from across the social spectrum, they helped to ensure, through visual cues, the social order of premodern England by promoting the owner’s wealth and status through ritual and display.

If you would like to know more my forthcoming book, The Culture of Castles in Tudor England and Wales will be available in September 2019 from Boydell Press.

[1] Henry Algernon Percy, The Regulations and Establishment of the Household of Henry Algernon Percy, the fifth Earl of Northumberland at his Castles of Wressle and Leakenfield in Yorkshire (London, 1905).

[2] The Castle Studies Trust has funded two projects at Wressle. You can explore the findings here: http://www.castlestudiestrust.org/Wressle-Castle.html

[3] The Regulations of the Earl of Northumberland,pp. 349-353.

[4] The Regulations of the Earl of Northumberland, p. 351.

[5] The Regulations of the Earl of Northumberland, pp. 342-3.

[6] The Regulations of the Earl of Northumberland, pp. 342-3.

Fresh from Fotheringhay

We have the results of the survey at Fotheringhay Castle. You can find out more about what we found in Steve Parry’s excellent blogpost, complete with the earliest depiction of the castle.

The castle is most famous as the place where Mary Queen of Scots was tried and executed. It was thoroughly dismantled in the first half of the 17th century, leaving the motte intact but little else above ground. Thanks to work by the Museum of London Archaeology and funded by the Castle Studies Trust, we now have a better idea of how the castle was arranged.

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The Shrewsbury Castle excavation: end of dig report

The investigations funded by the Castle Studies Trust at Shrewsbury Castle, one of the most important castles along the Anglo-Welsh border have now finished. Dr Nigel Baker reveals the preliminary findings of those investigations.

Before the dig began two weeks ago, our geophysics survey showed (with complete accuracy as it turned out) a spread of hard material just under the grass directly opposite the castle hall – possibly the remains of demolished buildings. Almost immediately the turf was off it became apparent that the hard material was not rubble but a low ridge of gravel, curving slightly as it headed south towards the main gate. Cut into this road surface (as we took it to be) were round, flat-bottomed topsoil-filled cuts, probably Victorian and later flower beds.

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Excavating through the gravel immediately revealed further, cleaner gravel, that appeared to be of natural/geological origin; further testing demonstrated that all the gravel was natural – the natural/geological top of the hill. It had been levelled, planed-off horizontally, in the fairly recent past, possibly in 1925-6 when the castle was restored, and any archaeological layers or building remains above the gravel would have been removed.

However, at the east end of the trench the gravel was found dug away at a 45-degree angle by a single, massive cut, with medieval pottery in the soil within it. The cut was recognised as the edge of the great defensive ditch that formerly encircled the base of the Norman motte. This would have been about 12 metres wide; the geophysics suggests there was probably a bridge over it, just north of the excavation, opposite the present hall entrance. The objects found in the ditch include pottery – cooking pots and glazed jugs – from the period roughly 1100-1400, and a large quantity of animal bone from food waste. There were also two arrow heads or crossbow-bolt heads, both of the ‘bodkin’ type: sharp, square-edged heavy points designed to penetrate armour and clearly for military use rather than hunting.

The principal conclusion of the excavation was that, when the castle was first built by the Normans in or just before 1069, the motte, with its defensive ditch, was enormous, and the inner bailey was tiny – it was little more than an extra layer of fortification wrapped around the approach up to the motte.

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Exploring Shrewsbury Castle

This year we’re funding investigations at Shrewsbury Castle, one of the most important castles along the Anglo-Welsh border. Nigel Baker told us how the work has been going.

Phase 1 of the Castle Studies Trust’s Shrewsbury Castle 2019 project is underway. Archaeological research is a long and painstaking process, so instant results are not to be expected – it must have taken a whole three hours to establish for the first time a number of simple but really fundamental facts about the hitherto-unexplored inner bailey.

Work started on Wednesday 8th May with the arrival at the castle of Tiger Geo, specialist geophysical survey contractors. Using ground-penetrating radar and resistivity, the lawns of the inner bailey interior and the slopes of the ramparts were gridded out and surveyed; the geophysicists never stopped, nor did the rain. But two basic conclusions emerged on screen from the raw data.

Tiger Geo doing sterling work despite the weather.

The first is that a ditch did once encircle the base of the motte within the perimeter of the inner bailey. This implies that the flat area within the inner bailey must originally have been a crescent-shaped area less than twenty metres wide from motte ditch to rampart tail.

The second conclusion is that there is, under the grass opposite and parallel to the standing early 13th-century ‘Great Hall’ (which houses a very fine Regimental Museum), another big building range backing onto the motte ditch. Given that the standing first-floor Great Hall was built as a royal chamber block (‘camera’) in the 1230s-40s, there is a possibility that a real Great Hall awaits excavation in the summer. But we’ve already answered one of the project’s main questions, ‘how was the inner bailey planned?’ The answer is there were two main ranges of buildings and no room for anything else.

While Tiger Geo mowed the lawns, the writer was busy in a bush at the base of the motte, freeing-up a manhole cover sealed for a decade. Under, a 20th-century brick inspection chamber gives access to a stone well-shaft alongside. The writer had been shown it surreptitiously by a kind gardener in the 1990s but without the opportunity for much recording. Now it has been photographed (though not with stunning competence), measured at just over seventy feet deep from ground level down to water level, and the masonry identified as probably late medieval – and not something done by Thomas Telford in the 1790s. So – Shrewsbury Castle retains its medieval well.

The medieval well. It’s a dizzying 21m down to water level.

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Baffling Bolingbroke: understanding Henry IV’s home

In rural Lincolnshire, nearly 30 miles east of Lincoln, stand the remains of a castle once held by royalty. The remaining walls and towers of Bolingbroke Castle are still 3m tall in some parts, and you can make out its distinctive hexagonal shape. The buildings that once crowded together inside the castle have long-since disappeared.

Bolingbroke Castle was founded in the 1220s by Ranulf de Blundeville, Earl of Chester and Lincoln and through marriage it ended up in the ownership of the House of Lancaster. John of Gaunt, Duke of Lancaster, lived here in the 1360s and the castle gave its name to his son Henry Bolingbroke, later crowned King Henry IV, who was born here in 1367. The history of the site is reasonably well documented, especially compared to castles not owned by the Crown, but there remain unanswered questions about its origins and development.

In 2018 we gave Heritage Lincolnshire a grant to delve deeper. They would carry out a geophysical survey to establish if there are buried remains immediately south of the castle and on Dewy Hill, which might be the site of an earlier castle, built before the stone one still visible at Bolingbroke.

Aerial photo of a green field surrounded by houses. At one end of the field stand the remains of a hexagonal castle.
Bolingbroke Castle on the left and the rectangular ‘Rout Yard’ on the right. Courtesy of Heritage Lincolnshire.

The plan was to use ‘magnetometry’. It works by measuring how magnetic the soil is and then plotting the results on a map. It allows you cover a large area quickly, and over the course of two days the Heritage Lincolnshire team surveyed more than five hectares (about five times the size of Trafalgar Square).

There is some natural variation in the soil, but typically human activity such as cooking hearths or stone walls have a different magnetic signature to the soil around them as they are made from different materials. Magnetometry can also be used to find filled-in ditches as the fill might contain traces of human occupation.

The first stage was to survey Dewy Hill, sitting 400m north-west of Bolingbroke Castle. It was excavated in the 1960s, and a digital survey of the terrain suggests a rectangular feature still survives. We hoped the geophysical survey would show how extensive the buried remains are, and the shape and size might give us an idea of what it is. Essentially, was it a castle or some other type of important place? There was a slight hitch…

But Heritage Lincolnshire did eventually get to take their magnetic gradiometer for a spin! Next, they surveyed the area south of the castle as it might contain an extension of the castle which has since been dismantled. Are there traces of this possible enclosure, or was there perhaps a garden here? In the later Middle Ages it was especially popular to shape the landscape around a castle. Right in the middle of this area is a rectangular piece of ground called the ‘Rout Yard’, but it’s unclear when it was created so the survey aimed to establish how this area relates to the castle.

Understanding the results takes a trained eye, and Heritage Lincolnshire have a highly skilled team of experts. They were able to find a few anomalies, but they either appear to be modern (there may be a concrete slab on Dewy Hill) or natural geological features.

The point of an exploratory project is to find out what lies beneath. Oddly, we expected something to be at Dewy Hill since earlier excavations suggested there might be some activity. The search for a possible bailey suggests that perhaps one did not exist or if it did it may have been insubstantial. That would mean the ruins we see today may represent the extent of the castle at its peak. Interestingly the fashion for having gardens might have passed Bolingbroke by. It was an important place, so may have begun to fall out of use by the time gardens became a common part of high-status medieval landscapes.

Despite the siege of 1643, the survey did not uncover ‘siegeworks’ which would have been built by the Parliamentarians. This might be because the siege was relatively short.

As a result of this work, we know more about how the surroundings of Bolingbroke Castle. Other types of geophysical survey may pick up different pieces of evidence, helping build a fuller picture of the area. Surveys like this are an important tool to understand sites, and Heritage Lincolnshire’s work will inform any future work at the castle.

Thank you to the owners, the Duchy of Lancaster, for allowing us to carry out the survey, to English Heritage who are guardians of the site, and to the volunteers from the local community who helped with the fieldwork. Projects like this really do take a village.

A full report has been prepared by Heritage Lincolnshire.