Paul one of Jesus's many followers he was called Paul of Tarsus, Saint Paul, Paul the Apostle or just Apostle Paul. Paul was a Roman Citizen which helped because he had some social status that helped people listen when he was spreading the word of Christ.
Paul never did meet Jesus but he converted when he was going to Damascus and saw the resurrected Jesus in a vision and he was temporally blinded. Paul helped spread the word of Jesus by writing letters to churches and Priest.
He converted many people to the religion he believed in so much. But it in the end his faith came back to kill him as the christian tradition says he was beheaded in Rome in the mid 60s A.D.