Month: September 2023

Transforming our understanding of Shrewsbury Castle

With the excavation report on the third and final season of excavation which the CST has funded now published on our website, project lead Dr Nigel Baker looks at what has been achieved since the first work in 2019 to now.

Just over a century ago Shrewsbury Castle began a new phase in its long life. In 1925 its principal surviving building, having been in use as a private dwelling since the castle was finally de-munitioned in 1686, became the meeting hall of Shrewsbury Borough Council, set in extensive landscaped gardens covering the remains of the motte and inner bailey, the outer bailey having (mostly) disappeared beneath the growing town by c.1300. Shrewsbury Castle remained more or less untouched by archaeology for the remainder of the 20th century. This changed in 2019 with the award by the Castle Studies Trust of a grant for a season of geophysical survey and excavation in the inner bailey. Following permission from Shropshire Council, the site owners, and Historic England, its legal guardians, the work took place in May and July 2019, the geophysics by contractors Tiger Geo and the excavation team made up of experienced local volunteers and staff and students of University Centre Shrewsbury. The results were unexpected.

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Shrewsbury Castle Excavation 2019 showing the width of the ditch around the motte using deckchairs (copyright Dr Nigel Baker)
Arrow heads found in Shrewsbury Castle Motte Ditch (copyright Dr Nigel Baker)

Immediately under the turf was natural glacial gravel: the top of the hill on which the castle had been built; the ground surface had been lowered sometime in the past, removing nearly all archaeological remains. This was almost certainly the work of the young Thomas Telford who, from 1786 to 1790, lived in and ‘restored’ the castle for its owner, Sir William Pulteney, M.P. for Shrewsbury. However, archaeological strata were found to have survived within cuts into the natural gravel, and two of these were of major significance. The first was the edge of a previously-unknown ditch around the base of the motte. Medieval cooking-pot sherds of late 11th-13th-century date were found in its lowest excavated layers, along with two armour-piercing crossbow quarrel heads. The second significant find was of a pit containing in its fill a piece of decorated bone and two types of pre-Conquest (Saxon) pottery: Stafford-type ware, distributed widely across the emerging towns of the region and already well represented in Shrewsbury; and a limestone-tempered fabric, TF41a, never before seen in Shrewsbury, which had been made in the Gloucester area and probably imported up the Severn. This confirms that there was pre-Conquest activity on the site of the castle, and, along with the Domesday evidence that there was a church of St Michael there by 1086, may point in the direction of a high-status pre-Norman presence on this tactically-significant site controlling access to the ancient borough.

Shrewsbury Castle Excavation 2020 (copyright Dr Nigel Baker)

Excavation resumed in the autumn of 2020 with a trench seeking a sample profile through the west rampart of the inner bailey. This turned out not to be medieval in date. Both the west and the north rampart were probably created as part of Thomas Telford’s landscaping work in 1786-90. But, intriguingly, below the west rampart there was no sign within the trench of the natural hilltop gravel found close by in 2019 at a depth of just a few centimetres. The explanation may be that the bailey was enlarged westwards between the Norman period and the later medieval period, by dumping soil and levelling-up behind a new curtain wall.

Shrewsbury Castle Excavation 2022 on the motte top (copyright Dr Nigel Baker

The final season of excavations took place in 2022 on the top of the motte, and outside the north curtain wall. Telford is known to have demolished ruined medieval buildings on the top of the motte and replaced them with the surviving two-storey Gothic summerhouse there. Excavation showed that Telford’s activities had, again, removed most of the archaeology but that the foundations of early medieval timber buildings (beam slots, a post pad, post holes) survived where they had been cut into the motte material. No definite trace was seen of the ‘great wooden tower’ which is documented on the motte top until its collapse in 1269-71.

New light was also shed on the motte by vegetation clearance on its south side, revealing for the first time remains of buildings incorporated in the masonry of the retaining walls. This work was undertaken on behalf of Shropshire Council for a new conservation-management plan, currently at consultation stage, which includes photogrammetric surveying of all the castle structures. This permanent stone-by-stone record not only forms the basis for the next vital stage of work – identifying and specifying long-needed repairs – it also offers new archaeological insights, including the identification of the probable primary sandstone rubble fabric of the curtain walls. This was in turn followed by some research carried out by Jason Hurst on Civil War musketry damage in 2023 (Potential shot damage at Shrewsbury Castle – Castle Studies Trust Blog) . And now, the process of publishing this body of new archaeological, architectural and historical information is just beginning…

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Picton Castle – form, function and affinities – new work at an enigmatic Pembrokeshire castle

Starting on September 11 2023, Dyfed Archaeological Trust, with Neil Ludlow, will undertake survey and recording at Picton Castle, near Haverfordwest in Pembrokeshire. This work, wholly funded by the Castle Studies Trust, will be fully analytical: it will provide a comprehensive record, underpinned by new research, in an attempt to unravel some of the mysteries of one of Wales’s – and indeed Britain’s – most enigmatic castles. Here Neil Ludlow and Phil Poucher from DAT explain more about the project.

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Picton Castle has been continuously occupied since it was built, and was substantially modified over the centuries, now wearing the veneer of an eighteenth-/nineteenth-century country house. Underneath, however, is a baronial castle from around 1300-20, of a highly unusual plan without close parallels in Britain and Ireland. A small, compact building, it comprised a hall-and-chamber block flanked for D-shaped towers, one near each corner, with a twin-towered gatehouse at one end – possibly unique – and a D-shaped tower, now lost, at the other. Variations on this basic ‘towered hall-block’ layout are seen in castles of similar date – and somewhat earlier – in the West Midlands, Scotland and the border, Ireland and even southwest France. But none fully mirror Picton’s plan-form – which might conceivably have been at least partly modelled on the large ‘keep-gatehouses’ of the late thirteenth century.

In addition, Picton shows strongly regional attributes including a first-floor hall, corbelled parapets and an abundance of squinched features in the external angles. The towers rise from pyramidal spur-buttresses with an unusual octagonal footprint, otherwise seen only in the gatehouses at St Briavels Castle (Gloucs.) and Tonbridge Castle (Kent). So a variety of influences – regional, national, international and purely personal – may lie behind design at Picton.

Picton Castle Ground Floor (incl ribbed vaulting)

No structured survey and analysis of the castle has yet been undertaken, and it is fundamental questions like this that the present study will address. In addition, little is known of how the castle actually functioned. The service end of the hall is currently assumed to have lain towards the gatehouse, where blocked doorways possibly led to a buttery and pantry; at the opposite end, it’s possible that the two western towers were united to form a storeyed chamber-block, to which the lost D-shaped tower was a bedchamber. But medieval access arrangements are still a mystery, as are the use and relative status of many internal spaces. For instance, it’s speculated that a broad flight of steps might have led from the gatehouse, through a ‘processional’ archway, to the hall. But the ground floor is, unusually for the region, rib-vaulted throughout – can it really have been ‘cellarage’, or did it provide access (and an anteroom) to the hall and chamber? Two spiral stairs connect ground- and first-floor level, one of them with very broad treads – were the distinguished by the status of their users? Or did the vaulted ground-floor corridor lead to a stair accessing the high end of the hall?

Not all internal walls have been dated – some, at least, may be post-medieval. Similarly, it is clear that not all medieval features such as openings, entries, stairs, latrines, fireplaces, ovens and hearths have yet been identified. Their correct identification and dating will tell us a lot more about status and usage of interior spaces, and about circulation between them. The location of the kitchen and bakehouse – and method of water-supply – are also still unknown: were they separate from the main building? A chapel was in existence by the seventeenth century, and is assumed to have a medieval predecessor, but it is yet to be shown whether it lay over the gate-passage like its successor.

The 2023 work aims to resolve such questions, and to achieve a full understanding of the form, functions and affinities of the medieval building. A combination of total-station theodolite survey, drone photography, drawn elevations, a high-resolution photographic record and, where possible, 3D modelling will be used to obtain a comprehensive record, supported by new research. All evidence for medieval features, openings and architectural detail will be recorded, along with former levels and access between them, and any indication of different building campaigns. The report, with all survey drawings and photos, will be posted on the Castle Studies Trust website. 3D models will be accessible via Sketchfab.

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