Nicene and Post-Nicene Fathers: Series II/Volume III/Lives of Illustrious Men/Jerome/Antonius the monk

the monk, whose life Athanasius bishop of Alexandria wrote a long work upon, sent seven letters in Coptic to various monasteries, letters truly apostolic in idea and language, and which have been translated into Greek. The chief of these is To the Arsenoites. He flourished during the reign of Constantinus and his sons.