[Sethomas]

Are you saying that there were no Christians in Rome during the persecution of the AD 60s? 'Cuz that just seems a little awkward to me. The Catholic Church wasn't really established as "Roman" until after Constantine, I'll grant you that, but there was a Roman Church that was part of the Catholic Church ever since before Nero. The adjective "Roman" was just tacked on in later centuries to establish the primacy of Peter as leader of the Apostles, and subsequently his followers (he was the first Bishop of Rome) have primacy over the other patriarchs.