Louis Joseph Xavier François (22 October 1781 – 4 June 1789) was Dauphin of France as the second child and first son of King Louis XVI and Marie Antoinette. As son of a king of France, he was a fils de France ("Child of France"). Louis Joseph died at the age of seven from tuberculosis and was succeeded as Dauphin (and thus heir-apparent) by his four-year-old brother Louis Charles.