Pope

Caius (Gaius) was a learned Christian writer active in Rome c. 198–217 under bishops Victor and Zephyrinus. He is best known for a written disputation against the Montanist leader Proclus, preserved in fragments by Eusebius, in which he defended Roman apostolic authority against charismatic prophecy. In that debate he cited the visible memorials of Peter on the Vatican Hill and of Paul on the Via Ostiensis as proof of the Roman church's apostolic foundation. He also attributed the Apocalypse of John to the Gnostic Cerinthus — a view that earned later controversy and drew a response from Hippolytus — and his objections to Revelation overlap in part with views later associated with the so-called Alogoi, though scholars regard the two as distinct. Beyond his literary activity in Rome, no credible source attests to a birthplace, travels, or ministry in any other location.