- Born on February 14, 1734 in Paris
- Assassinated on September 9, 1792 in Versailles, at the age of 58 years
- Burial the same day in this municipality
Parents
- Jean de Cossé-Brissac (1698 - 1780), duc de Brissac, maréchal de France, grand panetier de France
- Marie Josèphe Durey de Sauroy (1716 - 1756), baronne de La Motte-Saint-Jean, dame de compagnie de Mesdames les aînées Henriette et Adélaïde
Family
- Married on February 28, 1760 in Paris, with Diane Hortense Mancini-Mazarini (1742 - 1808), dame de Pontchartrain, dame d'atours de la Dauphine Marie-Antoinette, issuing
Adélaïde (1765 - 1818)- Jules Gabriel Timoléon (1771 - 1775)
- Relationship with Jeanne Bécu, Jeanne Bécu de Cantigny (1743 - 1793), dame de Louveciennes, modiste, femme de chambre