Pope and Bishop of Rome from 235 to 236
He served less than two months and died a natural death. He was buried in the cemetery of Callistus on the Appian Way.
- Catholic Encyclopedia, (NY:Robert Appleton Company)
- Richard P. McBrien, Lives of the Popes: The Pontiffs from St. Peter to John Paul II, (San Francisco:Harper San Francisco, 1997), p. 46