Analysis of information sources in references of the Wikipedia article "Bonifacio, Corse-du-Sud" in English language version.
In 828 the defence of Corsica was entrusted to Boniface II., count of the Tuscan march, who conducted a successful expedition against the African Mussulmans, and returning to Corsica built a fortress in the south of the island which formed the nucleus of the town (Bonifacio) that bears his name.