Dommoc (or Domnoc), 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 either 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. Foundation The primary authority for the foundation of the see of Dommoc is Bede's Historia ecclesiastica, ii.15. Following the assassination of Eorpwald of East Anglia by Ricberht in c. 627 the kingdom fell back into 'error' for three years, before Sigeberht, brother or half-brother of Eorpwald, took possession of the kingdom. Sigeberht had lived in exile in Gaul during his brother's lifetime, and had been initiated in the sacraments of the Christian faith, becoming a very Christian man of learning. On his accession he resolved to ensure that the whole kingdom shared his faith and he was very ably supported by Saint Felix. Felix had been born and consecrated in Burgundy. He came to Archbishop Honorius of Canterbury (Saint Honorius) and expressed his desire to preach the Gospel of Life. Honorius sent him to the East Angles, where he found a fruitful multitude of believers and brought that whole province to the faith and works of righteousness. He accepted the episcopal seat in the city (civitas) of Dommoc, and when he had governed it for seventeen years he died there in peace. An alternative account surviving in the much later work of William of Malmesbury relates that Sigeberht and Felix came to the kingdom together from Gaul. Early chronology The date of the foundation of Dommoc is estimated from the foregoing events and from the duration of tenure of the first three bishops. Edwin of Northumbria was baptised by Paulinus of York at Easter 626 and they then undertook the conversion of the Kingdom of Lindsey and of Eorpwald and his kingdom. Eorpwald was slain soon after his baptism, after which there was a reversal of faith for three years. Felix was bishop for seventeen years, his successor Thomas for five, and his successor Berhtgisl Boniface for a further seventeen