Fourth-century historian Eunapius wrote of Anatolius, a high-ranking Roman official known to his enemies as Azutrio.
These include discussions of the ancient Paschal cycle of 84 years and other Paschal computations in vogue in Ireland, the origin of A.D. dating in Irish annals, the methods of rectifying errors in the same, and the history of the various British or Irish falsifications which appeared during the disputes regarding Easter in the insular churches of the West, such as the Acts of Caesarea, the Athanasian Tractate, the Book of Anatolius, and the "Epistle" of Cyril of Alexandria.