Paris in the 16th century Wars of Religion (1562-1598). Paris was the stronghold of the Catholic League. On the night of August 23–24, 1572, while many prominent Protestants from all over France were in Paris on the occasion of the marriage of Henri of Navarre—the future Henry IV—to Margaret of Valois, sister of Charles IX, the royal council decided to assassinate the leaders of the Protestants. The targeted killings quickly turned into a general slaughter of Protestants by Catholic mobs, known as St. Bartholomew's Day massacre, and continued through August and September, spreading from Paris to the rest of the country. About three thousand Protestants
Paris in the 16th century religious conflicts between Catholics and the new Protestant sects grew over the course of the century, culminating in the St. Bartholomew's Day massacre and the wars of religion. The College of Sorbonne of the University of Paris, the city's major school of theology, took the lead in condemning heresies and Protestantism. In 1534 a Spanish student at the University, Ignatius of Loyola, gathered together five other students, who were Spanish, French and Portuguese, at the chapel of Saint-Pierre de Montmartre and formed a new society, the Society of Jesus, which became known as the Jesuits. His order became one of