Reigned 235 to 236. Probably born in Greece; died in Rome, Italy. Little is known of his pontificate of 42 days except that he caused notaries to collect the Acts of the Martyrs, and had them deposited in the Roman archives, for which act he was probably martyred. His tomb, with his name in Greek, is in the papal crypt of the cemetery of Callistus. Feast, 3 January.