- Born in November 1744 in Versailles
- Deceased on January 3, 1749, at the age of 4 years
Parents
- Louis de Brancas (1714 - 1794), duc de Villars, lieutenant-général, pair de France
- Diane Adélaïde de Mailly-Nesle (1714 - 1769), dame d'atours de la 2e dauphine Marie Josèphe de Saxe