 In the early 11th century, a stone building was then built in the manor on top of an artificial terrace, and it is possible that there may have been earlier stone buildings constructed on the same site.The building was surrounded by a ditch and possibly a rampart, each approximately wide and up to deep and high respectively.It is uncertain how far the outer defences reached; they may have traced the shape of the later castle, including a late-Anglo-Saxon cemetery located to the south-east.