[2] Felix came from the Frankish kingdom of Burgundy, and may have been a priest at one of the monasteries in Francia founded by the Irish missionary Columbanus—he may have been Bishop of Châlons, before being forced to seek refuge elsewhere.

Felix was born in the Frankish kingdom of Burgundy, although his name[discuss] prevents historians from conclusively identifying his nationality.

[9][10] The 7th-century jewelled grave goods found at Sutton Hoo display manufacturing technologies that are likely to be of Frankish origin, and materials that arrived in East Anglia via Francia.

It has been suggested that a connection between the disciples of Columbanus (who strongly influenced the Christians of Northern Burgundy) and Felix helps to explain how the Wuffingas dynasty established its links with Faremoutiers.

[11] The historian N. J. Higham notes several suggestions for where Felix may have originated, including Luxeuil, Châlons or the area around Autun.

[12] The historians Judith McClure and Roger Collins have noted the possibility that Felix, who was already consecrated as a bishop in Burgundy, may have become a political fugitive in Francia before his arrival in East Anglia.

[20] According to the historian Marios Costambeys, Felix's arrival in East Anglia seems to have coincided with the start of a new period of order established by Sigeberht when he became king.

[6] Soon after his arrival at Sigeberht's court, in about 630 or 631,[21] Felix established his episcopal see at Dommoc, which is widely considered by scholars to have been Dunwich, Suffolk,[5] a thriving town in the Middle Ages.

[22] The historian Richard Hoggett has suggested that Felix's see was at Walton Castle, near Felixstowe, where a Roman fort once existed.

[24] Bede related that Felix started a school, "where boys could be taught letters", to provide Sigeberht with teachers.

[26] According to the historian Margaret Gallyon, the large size of the East Anglian diocese would have made the foundation of a second religious establishment at Soham "appear very probable".

[2] During his years as bishop, the East Anglian Church was made still stronger when the Irish monk Fursey arrived from Ireland and founded a monastery, at Cnobheresburg, probably located at Burgh Castle, in Norfolk.