Governor of Navarre.

Colonel (1740), then brigadier (1745) in French army. Governor of Navarre (1745). Lieutenant general of Bayonne (1745). Served in Parliament as a peer (1749).

Son of Louis and Geneviève (de Gontaut- Biron) de Gramont. Married (1) his cousin Marie-Louise-Victoire de Gramont (1739); two sons. Married (2) Béatrix de Choiseul- Stainville (1759). Married (3) Marie-Henriette de Merle (1794).