The period from 1576 to 1584 was relatively calm in France, with the Huguenots consolidating control of much of the south with only occasional interference from the royal government. Extended civil war erupted again in 1584, when François, Duke of Anjou, younger brother of King Henry III of France, died, leaving Navarre next in line for the throne. Thus began the War of the Three Henrys, as Henry of Navarre, Henry III, and the ultra-Catholic leader, Henry of Guise, fought a confusing three-cornered struggle for dominance. After Henry III was assassinated on 31 July 1589, Navarre claimed the throne as the first Bourbon king of France, Henry IV.