Memnon was metropolitan bishop of Ephesus in the second quarter of the 5th century CE. He is known for his leading role during the Council of Ephesus in 431 CE (Ephesus, First Ecumenical Council) and his efforts to secure a successor of his choice. Both conflicts can be reconstructed from the accusations levied against him in the conciliar documentation of Ephesus (431 CE) and Chalcedon (451 CE) respectively. Th…