What was St. Peter Canisius’s role in the Counter-Reformation?

During the Counter-Reformation, St. Peter Canisius delayed the advance of Protestantism through religious discussions at Worms (1557) and at the Council of Trent and the Diet of Augsburg (1559). He sought to renew the Roman Catholic Church in Germany by forming alliances with the Holy Roman emperor, by preaching missions, and by extending the Jesuit order. His major work, the Triple Catechism (1555–58), became the most famous catechism of the Counter-Reformation.