patriarch of the Greek Orthodox Church of Antioch
d. 1054
54th Patriarch of Antioch (Greek line)
Peter III was a Patriarch of Antioch. He originally came from Antioch, but had been educated in Constantinople, where he rose to high office in the church of the Hagia Sophia. He was appointed as Patriarch of Antioch by Emperor Constantine Monomachos in 1052, and served in this role until his death in 1057. Peter corresponded with Christian leaders of the time, including Pope Leo IX and Patriarch Michael Keroularious.