He was born at Colorno, in the Duchy of Parma, as the son of Françoise de Châlus (bap. Château de Châlus-Chabrol, Châlus, Haute-Vienne, 24 February 1734 - Paris, 7 July 1821, daughter of Gabriel de Châlus, seigneur de Sansac, and Claire Gérault de Solages), one of the ladies-in-waiting of Elizabeth, Duchess of Parma and -Major of Princess Marie Adélaïde of France. Her husband was a nobleman of Spanish descent Don Jean François, 1er duc de Narbonne-Lara Grandee of Spain 1st Class, Lieutenant General of the Army, Commander in Name of the King of the Dioceses of Castres, Albi and Lavaur, 1st Gentleman of the House of H.R.H. the Duke of Parma (Aubiac, Lot-et-Garonne, 27 December 1718 - 12 August 1806), son of François de Narbonne-Lara, seigneur d' Aubiac, and second wife Olympie Angélique de G