(Latin: little Mars)
Reigned from 649 to 655. Born in Todi, Italy; died at Cherson, in the Crimea. He opened his pontificate by summoning a council at the Lateran to condemn Monothelitism, at which the "Ecthesis" of Heraclius and the "Typus" of Emperor Constans II were rejected, and Paul of Constantinople, Cyrus, and Sergius were excommunicated. For this Constans II caused Martin to be taken to Constantinople (653). After being insulted, ill-treated,and cast into jail, he was exiled to Cherson where he died. Feast, Roman Calendar, November 12,.