In what year was Louis Joseph de Frances's mother born?
Louis Joseph, Dauphin of France: 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. Marie Antoinette: Marie Antoinette ( ; ] ; born Maria Antonia Josepha Johanna; 2 November 1755 – 16 October 1793) was the last Queen of France before the French Revolution.
1755