Pope Saint Liberius, pope from May 17, 352 to September 24, 366, was consecrated according to the Catalogus Liberianus on May 22, as the successor of Pope Julius I. He is not mentioned as a saint in the Roman Martyrology. His first recorded act was, after a synod had been held at Rome, to write to Emperor Constantius II, then in quarters at Arles (353-354), asking that a council might be called at Aquileia with reference to the affairs of Athanasius of Alexandria; but his messenger Vincentius of Capua was compelled by the emperor at a conciliabulum held in Arles, to subscribe against his will a condemnation of the orthodox patriarch of Alexandria.