Severinus, pope from 638 to 640, and successor of Honorius I. The Monotitelite troubles led to the postponing of his confirmation by the emperor Heraclius until 640, when it was obtained on the pledge of his legates that the Roman clergy should subscribe to the emperor's Ecthesis (q.v.). He was enthroned May 28, and died Aug. 1 following. He condemned the Ecthesis, and consequently the Monothelite doctrine. — Herzog, Real-Encyklop. s.v.