Agatho, a Sicilian by birth was remarkable for his charity and benevolence, a profound humility and an engaging sweetness of temper. Having been several years treasurer of the church of Rome, he succeeded Domnus in the pontificate in 679. He presided in the sixth general council which ruled against the Monothelite heresy, “Acknowledged,” says he, “by the whole Catholic Church, to be the mother and mistress of all other churches, and to derive her superior authority from St. Peter, the prince of the apostles, in whom Christ committed his whole flock, with a promise that his faith should never fail.” The number of his miracles procured him the title of Thaumaturgus. He died in 682 having held the pontificate two and a half years.