St. Pius V was born in Lombardy, Italy, in January 1504. He joined the Dominican order in 1518 and became a teacher of philosophy and then theology. He began his involvement in the Inquisition in 1551, and he became a cardinal in 1557. He became the 225th pope in January 1566 and accomplished many things. He enforced reforms from the Council of Trent, opened seminaries, built hospitals and established foundations to spread the Catholic faith. He published a Roman Missal, the Roman Catechism and the revised Roman Breviary. St. Pius V also cared for the poor using the papal treasury. He died in 1572 in Rome, and he was canonized in 1712 by Pope Clement XI.