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.
Ralph the Timid Ralph the Timid, also known as Ralf of Mantes (died 1057), was Earl of Hereford between 1051 and 1055 or 1057. His mother was Godgifu, the daughter of King Æthelred the Unready and his second wife Emma. His father was Drogo of Mantes, Count of the Vexin, who died on pilgrimage to Jerusalem in 1035.