Who was perhaps not the only king of the West Saxons at the time, whos viceroy is said to have constructed Chisbury Camp, and to have founded Abingdon Abbey?
Cissa (West Saxon) Cissa was reported as the viceroy of king Centwine of Wessex (reigned c.676-686). Cissa is sometimes said to have himself been a king of Wessex, but does not feature in the king lists or genealogies. He is said to have constructed Chisbury Camp, and to have founded Abingdon Abbey.
Chiselbury Chiselbury is the site of an Iron Age univallate hillfort located in Wiltshire. The hillfort is sub-circular in plan, and encloses an area of approximately 10.5 acre . It is defined by an earthen rampart up to 3.6 m in height and an external ditch, up to a maximum of 1.6 m in depth. A gap in the southeastern side of the rampart, and a corresponding causeway across the ditch, is thought to be the original entrance and is associated with a small 'D' shaped embanked enclosure, which is apparently visible on aerial photographs. Although the enclosure has subsequently been degraded by ploughing, it is still apparent as a series of low earthworks.