Marie Thérèse of France

Marie-Thérèse was the eldest child of King Louis XVI and Queen Marie Antoinette of France, and their only child to reach adulthood. In 1799, she married her cousin Louis Antoine, Duke of Angoulême, the eldest son of Charles X of France, henceforth becoming the Duchess of Angoulême. She, along with her younger brother, Louis XVII, were the only members of their immediate family to survive the French Revolution.