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
Hessian War Peace Congress mediated by Duke Ernest of Saxe-Gotha and which resulted in a unification and peace treaty that was sealed in April 1648, ahead of the Treaty of Westphalia itself. Before the Westphalian Peace Treaty, Cassel fought one last time against the imperial side, winning the Battle of Wevelinghoven in the Rhineland, together with other Protestant troops. Darmstadt, however, was not involved in this battle. Under the Unification Treaty between Cassel and Darmstadt, Upper Hesse was permanently divided. Darmstadt had to give up a significant part of Upper Hesse to Cassel, not least Marburg and other occupied territories, including the