Bishop Æcci held the East Anglian see of Dommoc, following its division of in about 673, and during Ealdwulf's reign Æscwulf succeeded Æcci.
Walton Castle is one of the two principal sites (the other is Dunwich) claimed in the Middle Ages for the location of Dommoc, the original bishop's seat of St Felix (Felix of Burgundy), first bishop of the East Angles, who arrived c630 AD in the reign of King Sigeberht of East Anglia.