Eugenius of Ancyra is a minor character and has attracted the attention of scholars only in relation to his letter containing a profession of faith.

Eugenius was deacon of Ancyra (4th cent. CE) . He emerges as the compiler and conveyer of a letter that Marcellus of Ancyra’s followers sent to Athanasius of Alexandria, around the year 371 CE. The Marcellians (four names appear in the subscription of the letter: Theodoulos of Oxyrhynchos, Plenios of Hermonthis, Ischyrion of Leontopolis and an Isaac of unknown see) found themselves in a difficult situation, hemmed in by Basil of Caesarea’s cri…