国教会
The Council of Chalcedon summoned Dioscorus three times to appear at the council, after which he was deposed. The Council of Chalcedon further deposed him for his support of Eutyches, but not necessarily for Eutychian Monophysitism. Dioscorus appealed to the conciliar fathers to allow for a more Miaphysite interpretation of Christology at the council, but was denied. Following his being deposed, the Coptic Church and its faithful felt unfairly underrepresented at the council and oppressed politically by the Byzantine Empire. After the Byzantines appointed Proterius of Alexandria as Patriarch to represent the Chalcedonian Church, the Coptic Church appointed their own Patriarch Timothy Aelurus and broke from the State church of the Roman Empire.