Gennadius. Lives of Illustrious Men 46

Julianus the bishop, a man of vigorous character, learned in the Divine Scriptures, and proficient both in Greek and Latin, was, before he disclosed his participation in the ungodliness of Pelagius, distinguished among the doctors of the church. But afterwards, trying to defend the Pelagian heresy, he wrote four books, Against Augustine, the opponent of Pelagius, and then again, eight books more. There is also a book containing a discussion, where each defends his side.

This Julianus, in time of famine and want, attracting many through the alms which he gave, and the glamour of virtue, which they cast around him, associated them with him in his heresy. He died during the reign of Valentinianus, the son of Constantius.