St. Paul

The Pharisee who persecuted the first Christians until he was struck down on the road to Damascus, then spent his life as the Apostle to the Gentiles.

Feast June 29Tarsus and Rome

Canonized

St. Paul (Catholic Encyclopedia)

Sources

Catholic Encyclopedia (Herbermann, 1907-1913), 'St. Paul' — the Apostle to the Gentiles; the article treats the Acts of Paul at length and distinguishes the canonical record from later apocryphal material. NOTE: the encyclopedia predates the 1969 calendar reform and is NOT a source for the feast day. https://www.newadvent.org/cathen/11567b.htm
General Roman Calendar, 29 June — 'Sts Peter and Paul, Apostles'. Liturgy Office, England and Wales. https://www.liturgyoffice.org.uk/Calendar/Info/General-Roman-Calendar.pdf
29 June is the joint solemnity of Peter and Paul. The Conversion of St Paul on 25 January is a second celebration of the same saint.