Death of Anjou and ensuing succession crisis (1584–1585) The fragile compromise came to an end in 1584, when the Duke of Anjou, the King's youngest brother and heir presumptive, died. As Henry III had no son, under Salic Law, the next heir to the throne was the Calvinist Prince Henry of Navarre, a descendant of Louis IX. When it became clear that Henry of Navarre would not renounce his Protestantism, the Duke of Guise signed the Treaty of Joinville (31 December 1584) on behalf of the League, with Philip II of Spain, who supplied a considerable annual grant to the League over the following decade to maintain the civil war in France, with the hope of destroying the French Calvinists. Under pressure from the Guise, Henry III reluctantly issued the Treaty of Nemours (7 July 1585) and an edict suppressing Protestantism (18 July 1585) and annulling Henry of Navarre's right to the throne.
Death of Anjou and ensuing succession crisis (1584–1585) The fragile compromise came to an end in 1584 when the Duke of Anjou, the King's youngest brother and heir presumptive, died. As Henry III had no son, under Salic Law, the next heir to the throne was the Calvinist Prince Henry of Navarre, a descendant of Louis IX. When it became clear that Henry of Navarre would not renounce his Protestantism, the Duke of Guise signed the Treaty of Joinville (31 December 1584) on behalf of the League, with Philip II of Spain, who supplied a considerable annual grant, to the League over the following decade to maintain the civil war in France, with the hope of destroying the French Calvinists. Under pressure from the Guise, Henry III reluctantly issued the Treaty of Nemours (7 July 1585) and an edict suppressing Protestantism (18 July 1585) and annulling Henry of Navarre's right to the throne.