premise: Henry III of France was succeeded by Henry IV, who became the first French king of the House of Bourbon.
hypothesis: Henry IV of France was the first Bourbon king of France . Henry III of France . In 1589 , Jacques Clément , a Catholic fanatic , murdered Henry III , who was succeeded by the King of Navarre who , as Henry IV , would assume the throne of France after converting to Catholicism , and become the first French king of the House of Bourbon . Henry IV of France . He was the first French monarch of the House of Bourbon , a branch of the Capetian dynasty .