Stephanus (12), bp. of Ephesus at the time of the "Robber Synod" and the 4th council of Chalcedon. The 11th session of that council (Oct. 29, 451) was wholly occupied with investigating a complaint brought by Bassianus, formerly bp. of Ephesus, against Stephen, who was in advanced age, having been then 50 years one of the clergy of Ephesus. Bassianus had been expelled by violence from the see c. 448, and succeeded by Stephen. Both were deprived of the see by decree of the synod, but allowed a pension of 200 gold pieces (Mansi, t. vii. 271–294; Hefele's Councils , t. iii. p. 371, Clark's trans.). The name of Stephen of Ephesus is attached to a MS. collection of sermons in the Vienna imperial library (Lambecii, Comment. iii. 66; Fabric. Bib. Graec. xii. 183, ed. Harles).
[G.T.S.]