Adelphius

(1), a Gnostic contemporary with Plotinus (Porphyry, Vit. Plot. 16). He is not mentioned by Christian writers.

(2.) A member of the first Council of Aries, supposed to have been bishop of Lincoln (see Augustine, Opp. ix, App. 1095 A; Cave, Hist. Lit. i, 350; Routh, Rell. Stcr. iv, 313).

(3.) An Egyptian bishop and confessor, exiled by the Arians to the Thebaid. In 362 he writes as bishop of Onuphis, in the Delta. Athanasius addressed a letter (c. 371) to him, in which. he briefly defends the Catholic faith against the objections of Arians and, by anticipation, of Neatorians and Eutychians.