Saint Robert Bellarmine was a prominent Jesuit theologian and cardinal in the Catholic Church during the 16th and 17th centuries. Born on December 4, 1542, in Moncalieri, Italy, he became known for his significant contributions to Catholic doctrine and his role in the Counter-Reformation. He was canonized as a saint in 1930 and declared a Doctor of the Church in 1931. Bellarmine's most notable works include his writings on the Catholic Church's teachings and his defense against Protestantism. He served as the Archbishop of Capua and was influential in shaping the Church's response to the challenges posed by the Reformation. His feast day is celebrated on September 17.