Optional Memorial of Pope St. Martin I; became pope in 649, when there was a popular heretical teaching that Christ had no human will; Martin held a council in the Lateran in which the patriarch of Constantinople and two of his predecessors who held to this heresy were condemned; the emperor sent troops to Rome to seize Martin and to bring him back to Constantinople; he was submitted to various imprisonments, tortures, and hardships; he died shortly after, in 655, the last of the early popes to be venerated as a martyr