Irenaeus of Lyons in the 2nd century believed that Peter and Paul had been the founders of the Church in Rome and had appointed Linus as succeeding bishop.[72] Paul was not a bishop of Rome nor did he bring Christianity to Rome since there were already Christians in Rome when he arrived there (Acts 28:14-15). Also Paul wrote his letter to the church at Rome before he had visited Rome (Romans 1:1,7,11-13; 15:23-29). However, Paul would have played an important role in the life of the early church at Rome.
(... from Wikipedia on 2012-04-18 01:39:36)