The Dauphin's sister, Marie-Thérèse, was released from prison in 1795 and went to live in Austria. She later married Louis-Antoine, Duke of Angoulême, and they became King and Queen of France in 1824.
The Dauphin's two younger brothers died in childhood. The first, who was also named Louis Charles, was born in 1785 but died in 1789. The second, Louis-Joseph, was born in 1781 but died in 1789.