Sources
The principal source for Boniface is the first book of Gregory the Great's Dialogues, where he is treated at some length among the holy men of Italy. Gregory attributes his information to the priest Gaudentius, a disciple of Boniface who was still alive at the time of writing, which the text offers as a guarantee of the accounts. Later Orthodox synaxaria, including the entry kept on December 19, transmit the same tradition in condensed form.