He probably accompanied his master and patron, Fulgentius of Ruspe, to exile in Sardinia, when the bishops of the African Church were banished from their sees by the Arian King of the Vandals, Thrasamund.
After the death of Thrasamund and the accession of Hilderic, in 523, the exiles were permitted to return, and Fulgentius, although only a deacon, soon gained a position of great importance in the African Church.
He drew up a "Breviatio Canonum Ecclesiasticorum" in which he summarized in two hundred and thirty-two canons the teaching of the earliest ecumenical councils concerning the manner of life of bishops, priests, deacons and other ecclesiastics, and of the conduct to be observed towards Jews, pagans and heretics.
Also Ferrand preserves seven letters[5][6] transmitted in bulk: the two by which he interrogates Fulgence de Ruspe (the first on the question of whether an Ethiopian catechumen, died while administered baptism, was saved, the second on dogma Of the Trinity and the question of whether the divinity of Christ suffered on the cross), and five others, some very long, which are true little treatises on theology (notably the answer to the deacons Pelagius and Anatolius on the Three Chapters, by which he pronounced against the edict of Justinian, or the very long letter to Count Reginus on the duties of a Christian officer, presented in the form of seven rules.
On the other hand, Ferrand is the author of the Breviatio canonum ecclesiasticorum, a collection of 232 canons enacted by the oldest Greek and African councils, first published by Pierre Pithou.