Ulfilas
Byzantine Empire at a time when Arianism was dominant. Ulfilas was ordained a bishop by Eusebius of Nicomedia and returned to his people to work as a missionary. Ulfilas translated the Bible from Greek into the Gothic language. For this he established a Gothic alphabet writing system. Fragments have survived and are known as the Codex Argenteus, in the University Library of Uppsala.
Ulfilas converted many among the Visigoths and Ostrogoths, preaching an Arian Christianity, which when they reached the western Mediterranean, set them apart from their overwhelmingly Catholic neighbors and subjects.
The creed of Ulfilas, as appended to a letter praising him written by his foster-son and pupil the Scythian Ambrose De Fide.
