Memnon of Ephesus was a 5th-century metropolitan bishop who played an active role during the third ecumenical council. As a prominent leader in Ephesus, he acted as a close ally to Cyril of Alexandria during the theological disputes of the era. Beyond his administrative duties, he is recognized as a writer and a theologian. His tenure was marked by significant ecclesiastical politics, including his involvement in the formal protests against John of Antioch during the council sessions.
Ecclesiastical career
During the Council of Ephesus, Memnon supported the positions of Cyril of Alexandria. He provided his episcopal palace to host the council's second session. During the fourth session, he joined Cyril in lodging a formal protest against John of Antioch, who had organized a separate meeting to condemn them. Notably, Nestorius accused Memnon of causing delays in the council's commencement.
Succession and conflict
Memnon's relationship with a priest named Bassianus was reportedly strained by jealousy. In an attempt to remove him from his current position, Memnon tried to ordain Bassianus as the bishop of Evaza. However, Bassianus declined this appointment. Following Memnon's death in 443, Bassianus eventually became his successor through an irregular process in 444.