Adelphus, a chorepiscopus (q.v.) to Adolius, bishop of Arabissus, in the middle of the 5th century. . He signed as proxy for his diocesan at the Council of Chalcedon. Moschus (Spirit. Prat. c. 29), followed by George of Alexandria in his Life of Chrysostom, antedates the episcopate of Adelphus by half a century; and, confusing him with the unnamed bishop of Cucusus, by whom Chrysostom was honorably received on his arrival at his place of exile, makes the saint lodge at his house at- Cucusus. See Tillemont, xi, 623;. Baronius, Annales, ann. 407, § 29.-Smith. Dict. of Christ. Biog. s.v.