Constantine was selected as one of the last popes of the Byzantine Papacy. Pope Constantine: Pope Constantine was the bishop of Rome from 25 March 708 to his death on 9 April 715. One of the last popes of the Byzantine Papacy, the defining moment of his pontificate was his 710/711 visit to Constantinople, where he compromised with Justinian II on the Trullan canons of the Quinisext Council. The city's next papal visit occurred in 1967. March 25, 708. Wiki link