Carlo Borromeo was an influential figure in the Roman Catholic Church during the 16th century. Born in 1538 in Italy, he became a cardinal and played a significant role in the Counter-Reformation, which aimed to address issues within the Church and counter the Protestant Reformation. He is best known for his efforts in reforming the clergy and promoting education among priests. Borromeo was also the Archbishop of Milan, where he implemented various reforms to improve the spiritual and moral standards of the clergy and laity. He established seminaries for the training of priests and was dedicated to charitable works, including caring for the poor and sick during the plague that struck Milan in 1576. He was canonized as a saint in 1610.