A. D. B. C. Augustus. 27 A. D. Tiberius. 14 Caligula. 37 Claudius. 41 42 St. Peter, (according to Jerome). Nero. 54 67 Linus, (according to Jerome, Irenæus, Eusebius). 68 Clement, (according Galba, Otho, Vitellius, to Tertullian and Vespasian. 68 Rufinus). 78 Anacletus (?). Titus. 79 Domitian. 81 91 Clement, (according to later writers). Nerva. 96 Trajan. 98 100 Evaristus (?). 109 Alexander (?). Hadrian. 117 119 Sixtus I. 129 Telesphorus. Antoninus Pius. 138 139 Hyginus. 143 Pius I. 157 Anicetus. Marcus Aurelius. 161 168 Soter. 177 Eleutherius. Commodus. 180 Pertinax. 190 Didius Julianus. 191 Niger. 192 193 Victor (?). Septimius Severus. 193 202 Zephyrinus (?). Caracalla, Geta, Diadumenian. 211 Opilius Macrinus. 217 Elagabalus. 218 219 Calixtus I. Alexander Severus. 222 223 Urban I. 230 Pontianus. 235 Anterius or Anteros. Maximin. 235 236 Fabianus. The two Gordians, Maximus Pupienus, Balbinus. 237 Gordian the Younger. 238 Philip. 244 Decius. 249 251 Cornelius. Gallus. 251 252 Lucius I. Volusian. 252 253 Stephen I.