According to the New Testament book of Acts of the Apostles, the apostle Paul traveled to Italy as a prisoner of the Romans for the specific purpose of standing trial before Caesar (Acts 25:11, 12). The account of the circumstances of Paul's journey to Rome can be found in full starting in Acts chapter twenty-one.
As an apostle, Paul's ongoing purpose was to preach the gospel anywhere, under any circumstances, converting as many as possible. That Paul would testify before both Jew and Gentile, small and great was spoken of by Jesus just before Paul himself was converted (Acts 10:9-19; see especially v.15). The last we see of him in scripture (in Acts 28), Paul is living under house arrest in Rome, teaching and preaching God's word.
The Bible does not say who went to Rome to win converts to Christianity. However, Paul's Epistle to the Romans demonstrates that by the fifties at the latest, there was already a flourishing Christian community in Rome.
Paul is believed to have gone to Rome, but probably not so much with the intention of converting people to Christianity as to ensure that The Roman Christians were taught the same gospel message as he taught. Peter is traditionally thought to have moved to Rome, to head the church there, but there is no actual evidence that he ever visited Rome. Clement of Rome, while mentioning Peter, gives no hint that he knew of Peter having been in Rome a few decades earlier.
Paul.
Paul.
to convert many people to Christianity
The Bible does not say who went to Rome to win converts to Christianity. However, Paul's Epistle to the Romans demonstrates that by the fifties at the latest, there was already a flourishing Christian community in Rome. Paul is believed to have gone to Rome, but probably not with the intention of converting people to Christianity. Peter is traditionally thought to have moved to Rome, to head the church there, but there is no actual evidence that he ever visited Rome. Clement of Rome, while mentioning Peter, gives no hint that he knew of Peter having been in Rome a few decades earlier.
He brought a priest from Norway with him to Greenland to help convert the people to Christianity.
missionaries
There was no one particular person who spread Christianity throughout the empire. All of the disciples/apostles of Jesus went out to "teach all nations". Several apostles are patrons of distant countries and they may very well have traveled to them. For example, James is affiliated with Spain, Peter with Rome, Luke, although not an apostle but a friend of Paul, is buried in Padua, Italy according to the latest DNA. Paul himself traveled and wrote throughout the middle east until he was taken to Rome as a prisoner. The Roman Emperor Constantine also helped spread Christianity by declaring it the official religion of the Roman Empire.
the Apostle Paul who was not one of the original 12 Apostles and the Apostle John, as well as the other Apostles and disciples, missionaries and church planters.
The Apostle Paul was one of the main people who ministered to the gentiles (non-Jews)
he and his people will convert to his christinanity
St. John Brebeuf came from France to convert Native Americans to Christianity. He came with other Jesuits & they were subsequently Martyred in the New World.
They had been outcasts, but the church accepts them.