(Ἀβλάβιος ), a famous orator who lived in the time of Theoidosius the younger, and whom Chrysanthus (q.v.) admitted to priest's orders. Ablabius eventually became bishop of the Novatians at Nicea, where he also taught rhetoric. He wrote some sermons, which are lost, — Landon, Ecles. Dict. s.v.
In A.D. 314 Constantine wrote to one Ablabius, who held a command in Africa, and was apparently a Christian, summoning the disputants in the Donatist controversy to a council, at Arles (August. Op. 9 App. p. 21). This Ablabius is supposed to be the same with the praefect of the praitoritm (A.D. 326-337), who was deposed and put to death by Constantius.