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.
Ælfgifu of Shaftesbury Saint Ælfgifu of Shaftesbury, also known as Saint Elgiva (died 944) was the first wife of Edmund I (r. 939–946), by whom she bore two future kings, Eadwig (r. 955–959) and Edgar (r. 959–975). Like her mother Wynflaed, she had a close and special if unknown connection with the royal nunnery of Shaftesbury (Dorset), founded by King Alfred, where she was buried and soon revered as a saint. According to a pre-Conquest tradition from Winchester, her feast day is 18 May.