Euphrates
Euphrates bishop of Cologne, was the successor of bishop Maternus. He was present at the Synod of Sardica in 347, and was sent by the bishops of that synod with recommendatory letters from the emperor Constance to the emperor Constantius to obtain the recall of the exiled catholic bishops. The report that a synod held at Cologne in 346 deposed Euphrates for not believing in the divinity of Christ is now generally regarded as spurious. The acts of this pretended synod were probably compiled in the eighth century, and are from beginning to end a forgery. — Wetzer und Welte, Kirchen-Lexik. 12:241; Rettberg, Kirchen-Geschichte Deutschlands, volume 1. (A.J.S.)
