He is said to have convinced their king Sigeberht of the truth of Christianity by his arguments, and at his request sent Cedd, a brother of Ceadda, on a mission to Essex.
Eorpwald, the son of Radwald, was converted to Christianity by Edwin, but was soon afterwards slain by Ricberht (627 or 628), whereupon the kingdom again became pagan for three years, when Sigeberht, the brother of Eorpwald, became king and founded a see for Felix at Dunwich.
Sigeberht also founded a school in East Anglia, and on the arrival of an Irish missionary named Furseus he built him a monastery at Cnobheresburg, perhaps to be identified with Burgh Castle.
Before 644, however, Sigeberht resigned the crown in favour of his brother Ecgric and retired to a monastery.
627 or 628); Sigeberht, brother of Eorpwald; Ecgric, brother of Sigeberht (both slain before 644); Anna, son of Ene and grandson of Tytili (d.
In the year 653 we find North umbrian influence paramount in Essex, for King Sigeberht at the instance of Oswio became a Christian and received Cedd, the brother of St Chad, in his kingdom as bishop, Tilbury and Ythanceastere (on the Blackwater) being the chief scenes of his work.
Swithhelm, the successor of Sigeberht, was on terms of friendship with the East Anglian royal house, King ZEthelwald being his sponsor at his baptism by Cedd.
C. 617); three sons of Saberht, including probably Saweard and Seaxred; Sigeberht (Parvus); Sigeberht II.; Swithhelm (d.
At his death in 756 Sigeberht succeeded.
Sigeberht, after putting to death the last of the princes who remained faithful to him, was driven into exile and subsequently murdered; but vengeance was afterwards taken on Cynewulf by his brother Cyneheard.
Their lands were given by the Frankish king Sigeberht to the north Suebi and other tribes who had come either from the Elbe basin or possibly from the Netherlands.
About the same time Sigeberht was defeated by the Avars, and though the latter soon withdrew from the Frankish frontiers, their course was followed by a movement of the Slays, who occupied the basin of the Elster and penetrated to that of the Main.