 The authority of East Anglian Christianity still resided in the East Anglian see at Dommoc, obedient to Canterbury.Saint Botolph began to build his monastery at Iken, on a tidal island site in the River Alde, Suffolk, in about 653, the year that Anna of East Anglia was killed at the Battle of Bulcamp.Oswiu successfully persuaded Sigeberht II of the East Saxons to receive baptism and Cedd, a Northumbrian disciple of Aidan's, was diverted from the Northumbrian mission to the Middle Angles under Peada to become Bishop of the East Saxons and re-convert the people.