 He died in 1801 at the home of his old enemy Charles William Ferdinand, Duke of Brunswick, now his friend.He possessed a property at Antony where Parc Heller now is, as well as a castle at Ollainville, which he enlarged in 1782.In Paris, he installed himself in the hôtel de Castries in 1743, at 72 rue de Varenne, and in 1761 redecorated it out of a large inheritance from his uncle, the marshal of Belle-Isle.