Ephesus: A True Ecumenist Address of St. Mark of Ephesus on the Day of His Death The Encyclical Letter of St. Mark of Ephesus Saint Mark Eugenikos (the Courteous) Migne’s Patrologia Graeca volume 160 containing the works of Mark of Ephesus St. Mark of Ephesus 1392 births 1444 deaths Byzantine saints of the Eastern Orthodox Church East–West Schism Saints from Anatolia 15th-century Christian saints 15th-century Byzantine bishops Bishops of Ephesus Critics of the Catholic Church 15th-century Byzantine people Filioque 15th-century Byzantine writers