The Duke of Aumale was a title in the French nobility, historically associated with the region of Aumale in Normandy. The title was created in 1857 for Henri d'Orléans, a member of the House of Orléans, which was a branch of the French royal family. The Duke was known for his military service and his role in the political landscape of 19th-century France. The title of Duke of Aumale became notable for its connection to the Château de Chantilly, a grand estate that housed an extensive art collection. The Duke was also a significant figure in the preservation of French heritage, contributing to the arts and culture during his lifetime.