Dioscorus I, also known as Dioscorus the Great, was the pope of Alexandria and patriarch of the See of St. Mark who was deposed by the Council of Chalcedon in 451. He was recognized as patriarch by th
Coptic icon of St. Dioscorus from the Monastery of Saint Anthony, by Theodore, 13th century
Fresco of Dioscuros of Alexandria in the Syrian Monastery, He was intentionally depicted on a column, to signify his status as "Column of Faith", along with St.Severus of Antioch, Oriental Orthodoxy's most fierce defender.
Council of Chalcedon
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The Council of Chalcedon was the fourth ecumenical council of the Christian Church. It was convoked by the Roman emperor Marcian. The council convened in the city of Chalcedon, Bithynia from 8 October
Fourth Ecumenical Council of Chalcedon, 1876 painting by Vasily Surikov
Council of Chalcedon, fresco at Ferapontov Monastery, c. 1502.
Council of Chalcedon in the Nuremberg Chronicle.
Christ Pantocrator mosaic from Hagia Sophia 2744 x 2900 pixels 3.1 MB