High Quality Content by WIKIPEDIA articles! Pope Saint Zachary (Greek: Zacharias) was Pope of the Catholic Church from 741 to 752. A Greek from Calabria, he was the last pope of the Byzantine Papacy. Most probably he was a deacon of the Roman Church and as such signed the decrees of the Roman council of 732 and was on intimate terms with Gregory III, whom he succeeded on December 10, 741.