Louis Philippe d'Orléans known as le Gros (the Fat) (12 May 1725 – 18 November 1785), was a French prince, a member of a cadet branch of the House of Bourbon, the dynasty then ruling France. The First Prince of the Blood after 1752, he was the most senior male at the French court after the immediate royal family. He was the father of Philippe Égalité. He greatly augmented the already huge wealth of the House of Orléans.