Saint Callixtus I

Pope Callixtus I, also known as Callistus I, was the bishop of Rome from around 218 to his death in either 222 or 223. He served during the reigns of Roman emperors Elagabalus and Alexander Severus. According to Sextus Julius Africanus, he succeeded Zephyrinus as Bishop of Rome. Eusebius and the Liberian catalogue record his episcopate lasting five years from 217 to 222....