Pope Callixtus I, also called Callistus I, was the bishop of Rome (according to Sextus Julius Africanus) from c. 218 to his death c. 222 or 223. He lived during the reigns of the Roman emperors Elagabalus and Alexander Severus. Eusebius and the Liberian catalogue list his episcopate as having lasted five years (217–222). In 217, when Callixtus followed Zephyrinus as Bishop of Rome, he started to admit into the Church converts from sects or schisms. He was martyred for his Christian faith and is venerated as a saint by the Catholic Church (the patron saint of cemetery workers). Life Callixtus I's contemporaries and enemies, Tertullian and Hippolytus of Rome, the author of Philosophumena, relate that Callixtus, as a young slave from Rome, was put in charge of collected funds by his master Carpophorus, funds which were given as alms by other Christians for the care of widows and orphans; Callixtus lost the funds and fled from the city, but was caught near Portus. According to the tale, Callixtus jumped overboard to avoid capture but was rescued and taken back to his master. He was released at the request of the creditors, who hoped he might be able to recover some of the money, but was rearrested for fighting in a synagogue when he tried to borrow money or collect debts from some Jews. Philosophumena claims that, denounced as a Christian, Callixtus was sentenced to work in the mines of Sardinia. He was released with other Christians at the request of Hyacinthus, a eunuch presbyter, who represented Marcia, the favourite mistress of Emperor Commodus. At this time his health was so weakened that his fellow Christians sent him to Antium to recuperate and he was given a pension by Pope Victor I. In 199, Callixtus was ordained a deacon by Pope Zephyrinus and appointed superintendent of the Christian cemetery on the Appian Way. That place, which is to this day called the Catacombs of St. Callixtus, became the burial-ground of many popes and was the first land property owned by the Church. Emperor Julian the Apostate, writing to a pagan priest, said: In the third century, nine bishops of Rome were interred in the Catacomb of Callixtus, in the part now called the Capella dei Papi. These catacombs were rediscovered by the archaeologist Giovanni Battista de Rossi in 1849. In 217, when Callixtus followed Zephyrinus as Bishop of Rome, he