PETER FULLO, Monophysite patriarch of ANTIOCH. — The date and place of his birth are unknown; he died at Antioch in 490. After becoming a priest, he directed a sanctuary at Chalcedon and from there in 464 went with the future Emperor Zeno to Antioch, where, during the absence of Patriarch Martyrius and with Zeno’s support, he became patriarch: the first Monophysite patriarch.
Soon afterward he was deposed but returned briefly before being deposed again and confined to a monastery in Constantinople (467?). He returned in 475 under the usurper Basiliscus, who favored the Monophysites. But when Basiliscus was deposed by Zeno in 476, Peter too had to go into exile. Zeno, however, changed his religious policy by issuing the Henotikon in 482. In 483 Peter was reinstated in the see of Antioch and remained there until his death.
With Peter the Monophysite cause triumphed in the patriarchate of Antioch. He added to the Trisagion the formula “who wast crucified for us.” Peter was patriarch of Antioch four times: 460–65(?), 466(?), 467(?), 475–76; 483–90.