Fourth Council of Constantinople (Eastern Orthodox)

The Fourth Council of Constantinople was held in 879–880. It confirmed the reinstatement of Photius I as patriarch of Constantinople.

Fourth Council of Constantinople
Accepted byEastern Orthodoxy
Previous council
Second Council of Nicaea
Convoked byEmperor Basil I
Attendance383 bishops
TopicsPhotius' patriarchate
Documents and statements
Restoration of Photius, protection of Nicene creed
Chronological list of ecumenical councils

The result of this council is accepted as having the authority of an ecumenical council by Eastern Orthodox Christians, who sometimes call it the Eighth Ecumenical Council.[1][2]