Motte and bailey at Dunster Castle

Scheduled area

© Mapbox · © OpenStreetMap contributors · Boundary data © Historic England (NHLE)

History & significance

Motte and bailey at Dunster Castle is a Norman fortification of the eleventh and twelfth centuries, representing one of the earliest phases of the castle's long and complex occupation at Dunster in Somerset. The site occupies a dramatically prominent position on a steep, elongated sandstone tor rising some thirty metres above the surrounding town and the low-lying levels of the Vale of Taunton Deane, with the Bristol Channel and the Exmoor uplands visible from its summit. This natural eminence provided the incoming Norman lords with an ideal strategic platform commanding the River Avill valley, the coastal lowlands to the north, and the roads threading between the Somerset Levels and the moorland interior. The castle sits at the heart of what was already a settled and economically significant landscape by the time of the Conquest, and its position above the medieval borough of Dunster, with its famous octagonal yarn market and Benedictine priory, underscores the degree to which Norman power was both military and civic in character.

The castle at Dunster was founded in the immediate aftermath of the Norman Conquest by William de Mohun, a companion of William the Conqueror who was rewarded with extensive Somerset estates following the decisive events of 1066. De Mohun held Dunster as the caput, or head, of his Somerset honour, and the construction of a castle here was a deliberate assertion of military and tenurial authority over a conquered population. The choice of the sandstone tor was characteristically Norman in its opportunism, exploiting a pre-existing natural feature of considerable defensive value. It is likely that the earliest fortification was of timber, as was standard practice in the first generation of Norman castle-building, with earthworks thrown up rapidly and the more permanent character of the site developing over subsequent decades as the de Mohun family consolidated their position.

The physical remains of the original motte and bailey arrangement survive beneath and around the later medieval and post-medieval structures that the tor has accumulated over many centuries of refortification and rebuilding. The motte itself is formed by the natural rocky knoll, artificially scarped and shaped to produce the characteristic steep-sided, flat-topped mound that defines this castle type, its summit providing the platform on which successive towers and keeps were later erected. The bailey extends to the north and east of the motte summit, its perimeter defined by earthwork banks and ditches that, while partly modified by later construction campaigns, retain legible traces of their original Norman configuration. The whole fortified area is contained within substantial ramparts, and the natural scarps of the tor itself serve as formidable defensive elements on the more precipitous sides. Though the standing fabric visible today is overwhelmingly the product of later medieval and seventeenth-century rebuilding under the Luttrell family, the underlying earthwork topography of motte and bailey form is archaeologically distinguishable and constitutes the primary reason for the monument's scheduled status.

Dunster Castle passed from the de Mohun family in the early fifteenth century, having been held by them for over three centuries, and was subsequently acquired by the Luttrell family in 1376, in whose possession it remained until the National Trust received it in the twentieth century. Under the de Mohuns and their successors the castle served as a baronial residence and centre of local administration, functioning throughout the medieval period as a place of considerable social and political significance in western Somerset. It saw military action during the Civil War of the seventeenth century, withstanding Parliamentarian sieges before eventually being slighted in 1650, with orders for its partial demolition, though the structure proved sufficiently robust and was subsequently repaired and transformed into the comfortable country house that visitors encounter today. The castle's long unbroken record of high-status occupation means that the medieval earthworks underlie layers of later intervention, making the original Norman phases of particular archaeological importance as evidence of the conquest landscape.

The archaeological and heritage significance of this monument is substantial. The survival of recognisable motte and bailey earthworks at Dunster, beneath and around one of the most continuously occupied castle sites in southern England, provides rare evidence for the earliest phase of Norman

Motte and bailey at Dunster Castle is a scheduled monument protected by Historic England under reference 1020410. View the official record →

Questions & answers

Other scheduled monuments within 10 km

Generate a full report for this location

Aubrey generates in-depth historical research for any address in Britain — drawing on scheduled monument data, Domesday records, Roman heritage, PAS finds and medieval history to reveal the complete story of a landscape.