14 October 217-222 A.D. Calixtus 1—Rome’s 16th; Oppposed by Hippolytus
14 October 217-222 A.D. Calixtus 1—Rome’s 16 th ; Oppposed by Hippolytus Chapman, John. "Pope Callistus I." The Catholic Encyclopedia. Vol. 3 . New York: Robert Appleton Company, 1908. http://www.newadvent.org/cathen/03183d.htm . Accessed 27 May 2014. Pope Callistus I (Written by most Latins, Augustine, Optatus, etc. CALLIXTUS or CALIXTUS). Martyr , died c. 223. His contemporary, Julius Africanus , gives the date of hisaccession as the first (or second?) year of Elagabalus , i.e., 218 or 219. Eusebius and the Liberian catalogue agree in giving him five years of episcopate. His Actsare spurious, but he is the earliest pope found the fourth-century "Depositio Martirum", and this is good evidence that he was really a martyr , although he lived in a time of peace under ...