The War of the Three Henrys (1587-1589) was a conflict in France during the late 16th century, part of the larger struggle known as the French Wars of Religion. It involved three key figures: Henry III, the reigning king; Henry of Navarre, a Protestant leader; and Henry, Duke of Guise, a powerful Catholic noble. The war was marked by political intrigue and violent clashes between Catholics and Protestants. The conflict arose from the power struggle among these three leaders, each vying for control of France. Ultimately, the war ended with the assassination of Henry of Guise and the eventual rise of Henry of Navarre, who would later become King Henry IV and issue the Edict of Nantes, granting religious tolerance.