Arabianus bishop of Ancyra, was present at the Synod of Constantinople, A.D. 394, when he raised the question whether a bishop could be deposed by two bishops only (Labbe,: Concil. ii, 1377, ed. Coleti). He also took part in the synod held by Chrysostom at the same place, A.D. 400, to consider the charges against Antoninus of Ephesus (Palladius, Vit. Chrys. 13). See Labbe, Concil. ii, 1465.