to the same person and work in perfect harmony, can no more by physically identified than the natures from which they proceed. Historians are not agreed as to how Cyrus came by this. Some think that he was, from the outset, a Monophysite at heart. Others, with more reason, hold that he was led to this belief by Sergius and Heraclius. Cyrus was posthumously condemned as a heretic in the Lateran Council of 649 (Denzinger, Enchiridion, 217, 219) and in 680 at the Third Ecumenical Council of Constantinople (Denzinger, 238; Mansi, XI, 554). See also Al-Muqawqis References Sources 7th-century Patriarchs of Alexandria 7th-century Roman governors of Egypt Year of birth missing 642 deaths Lazica People declared heretics by the first seven ecumenical councils Heraclius Muslim conquest of Egypt