François Ravaillac in the context of "Henry IV of France"

Henry IV (French: Henri IV; 13 December 1553 – 14 May 1610), also known by the epithets Good King Henry (le Bon Roi Henri) or Henry the Great (Henri le Grand), was King of Navarre (as Henry III) from 1572 and King of France from 1589 to 1610. He was the first monarch of France from the House of Bourbon, a cadet branch of the Capetian dynasty. He pragmatically balanced the interests of the Catholic and Protestant parties in France, as well as among the European states. He was assassinated in Paris in 1610 by a Catholic zealot, and was succeeded by his son Louis XIII.

Henry was baptised a Catholic but raised as a Huguenot in the Protestant faith by his mother, Queen Jeanne III of Navarre. He inherited the throne of Navarre in 1572 on his mother's death. As a Huguenot, Henry was involved in the French Wars of Religion, barely escaping assassination in the St. Bartholomew's Day massacre. He later led Protestant forces against the French royal army. Henry inherited the throne of France in 1589 upon the death of Henry III. Henry IV initially kept the Protestant faith (the only French king to do so) and had to fight against the Catholic League, which refused to accept a Protestant monarch. After four years of military stalemate, Henry converted to Catholicism, reportedly saying that "Paris is well worth a Mass". As a pragmatic politician (politique), he promulgated the Edict of Nantes (1598), which guaranteed religious liberties to Protestants, thereby effectively ending the French Wars of Religion.