Siward

Siward (died 1048) was Abbot of Abingdon in Berkshire (now Oxfordshire) and a bishop in the Diocese of Canterbury.

Siward was a monk at Glastonbury until he was appointed Abbot of Abingdon in 1030. He was made coadjutor to the Archbishop of Canterbury in 1044. Kelly asserts Siward was titled Bishop of St Martin's, but Somner finds no evidence of this, and claims Siward was consecrated Bishop of Uppsala. He was buried at Abingdon. As a result of the death some land and personal treasures including the furnishings of his chapel were given to Abingdon Abbey