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Eusebius of Nicomedia

Eusebius of Nicomedia (d. 342). Bishop of Nicomedia and later Constantinople; Arius’s principal episcopal advocate at the imperial court, distinct from Eusebius of Caesarea. Baptized Constantine; only a few letters and fragments survive.

• Letters and Fragments c. 318–328 The surviving letters and fragments of Eusebius of Nicomedia (d. 342), Arius’s leading episcopal ally and later bishop of Constantinople: the letter to Paulinus of Tyre on the Son’s creation and begetting; a fragment to Arius on beginning; the homoousios line preserved by Ambrose; and the joint petition with Theognis after exile.