High Quality Content by WIKIPEDIA articles! Gabriel de Rochechouart de Mortemart, Duke of Mortemart (1600 26 December 1675) was a French nobleman and father of the infamous Madame de Montespan. He was a friend of the French King Louis XIII. Through his daughter Madame de Montespan, he is an ancestor of the famous, Philippe Egalité, Louis-Philippe I, King of the French, and Prince Henri, Count of Paris, the present Orléanist pretender to the French throne. He is also an ancestor of Juan Carlos I of Spain, Albert II, King of the Belgians, Henri, Grand Duke of Luxembourg and Vittorio Emanuele, Prince of Naples, the pretender to the Italian throne.