Henri II d'Orléans, Duke of Longueville Henri II d'Orléans, Duke of Longueville Henri II d'Orléans, duc de Longueville or Henri de Valois-Longueville (6 April 1595 – 11 May 1663), a legitimated prince of France (of royal descent) and peer of France, was a major figure in the civil war of France, the Fronde, and served as governor of Picardy, then of Normandy. He was the only son of Henri I d'Orléans, duc de Longueville and Princess Catherine Gonzaga. Longueville headed the French delegation in the talks that led to the Treaty of Westphalia which ended the Thirty Years War (1648). In his role as sovereign prince
Peace of Westphalia Peace of Westphalia The Peace of Westphalia () was a series of peace treaties signed between May and October 1648 in the Westphalian cities of Osnabrück and Münster, largely ending the European wars of religion. The treaties of Westphalia brought to a close a calamitous period of European history which caused the deaths of approximately eight million people. Scholars have identified Westphalia as the beginning of the modern international system, based on the concept of Westphalian sovereignty. The negotiation process was lengthy and complex. Talks took place in two different cities, as each side wanted to meet on territory under