The Royal Military and Hospitaller Order of Our Lady of Mount Carmel and Saint Lazarus of Jerusalem united (French: Ordre royal militaire et hospitalier de Notre-Dame du Mont-Carmel et de Saint-Lazare de Jérusalem réuni) was a chivalric order instituted in 1608 by personal union of the medieval Order of Saint Lazarus in France and the new Order of Our Lady of Mount Carmel of King Henry IV of France. The union of the two orders was recognised by a bull of Cardinal Louis de Bourbon, papal legate in France, dated 5 June 1668. After the turmoil of the French Revolution, the order ceased to enjoy royal protection in 1830. Source: Wikipedia (en)