Reigned from 556 to 561. Born in Rome; died there. A deacon, he was dispatched as nuncio to Constantinople, 536, where he procured the condemnation of Origen, 543. In the Three Chapters controversy, by supporting the Emperor Justinian and the Fifth General Council, he was unable to avert the schism which broke out in Northern Italy. He did, however, avert the schism in Gaul. He organized ecclesiastical tribunals, suppressed abuses among the clergy, and reorganized the patrimony of Saint Peter.