Louis Joseph de France (Louis Joseph Xavier François; 22 October 1781 – 4 June 1789) was the second child and elder son of King Louis XVI of France and Marie Antoinette. As the heir apparent to the French throne, he was called the twenty-sixth Dauphin of France—the hereditary "crown prince" title of the Capetian and Bourbon Monarchies as well as of medieval and early-modern France.