Dommoc

Dommoc, a place not certainly identified but probably within the modern county of Suffolk, was the original seat of the Anglo-Saxon bishops of the Kingdom of East Anglia. It was established by Sigeberht of East Anglia for Saint Felix in c. 629–31 It remained the bishopric of all East Anglia until c. 673, when Theodore of Tarsus, Archbishop of Canterbury, divided the see and created a second bishopric at (North Elmham, Norfolk, or South Elmham, Suffolk). The see of Dommoc continued to exist until the time of the Viking Wars of the 860s, after which it lapsed.

Read more about Dommoc:  Foundation, Early Chronology, Location, Dunwich, Felixstowe