Louis, Dauphin of France (b. 1729)

Louis, Dauphin of France (Louis Ferdinand; 4 September 1729 – 20 December 1765) was the elder and only surviving son of King Louis XV of France and his wife, Queen Marie Leszczyńska. As a son of the king, Louis was a fils de France. As heir apparent, he became Dauphin of France. However, he died before he could ascend the throne. Three of his sons became kings of France: Louis XVI (reign in 1774–1792), Louis XVIII (1814–1815, again in 1815–1824) and Charles X (1824–1830).