Changes

*ca.451 Coptic Christianity broke from the Byzantine churches in the wake of the Fourth Ecumenical Council in Chalcedon in 451; [[Shenouda the Archimandrite|Shenouda the Great]], abbott of White Monastery in Egypt (d.466), is considered the founder of Coptic Christianity.

:'''[[British Orthodox Church (Coptic)|British Orthodox Church]]'''

====[[Church of Antioch (Syriac)]]====

*544 Jacob Baradeus consecrates Sergius of Tella as bishop of Antioch, opening the lasting schism between the Syriac Orthodox Church and the Chalcedonian Church of Antioch.

:'''[[Malankara Jacobite Syriac Orthodox Church]]'''

====[[Church of Armenia|Armenian Apostolic Church]]====