Saul, Jew of Tarsus and persecutor of Christians, converted to Christianity when, on a trip from Jerusalem to Damascus, he fell from his horse, due to the appearance of Christ, that left him temporary blind. From that point on, he adopted the name of Paul, which signified humility.

Generally he’s represented as bald and with a long beard.  His main attribute is the sword, as a reference to his decapitation in Rome, which happened, according to tradition, the same day as Saint Peter’s ordeal.