The conversion of the barbarians under the reign of Constantine is celebrated by the ecclesiastical historians (see Sozomen, l. ii. c. 6, and Theodoret, 1. i. c. 23, 24). But Rufinus, the Latin translator of Eusebius, deserves to be considered as an original authority. His information was curiously collected from one of the companions of the Apostle of Aethiopia, and from Bacurius, an Iberian prince, who was count of the domestics. Father Mamachi has given an ample compilation on the progress of Christianity, in the first and second volumes of his great but imperfect work.