Louis Antoine, Duke of Angoulême
Louis Antoine of France, Duke of Angoulême (6 August 1775 – 3 June 1844) was the elder son of Charles X of France and the last Dauphin of France from 1824 to 1830. He was a petit-fils de France at birth, and was initially known as Louis Antoine d'Artois.
Source: Wikipedia — Louis Antoine, Duke of Angoulême (CC BY-SA 4.0)