The Fourth Council of Constantinople was the 8th Ecumenical Council. In accordance to the Roman Catholic Church, it was held in Constantinople from October 5, 869 to February 28, 870. It included 102 bishops, 3 papal legates, and 4 patriarchs. The Council met in 10 sessions from October 869 to February 870 and issued 27 canons. The council was called by Emperor Basil I the Macedonian and Pope Adrian II. It deposed Photios, a layman who had been appointed as Patriarch of Constantinople, and reinstated his predecessor Ignatius.