French army officer.
Entered the Spanish army (1763). Transferred to the French service (1769); rose to the rank of brigadier of infantry (1780) and maréchal de camp (1784). Deputy to the Estates General (1789). Founding member of the Jacobin club. Remained in France during and after the Revolution, holding various military and political offices.
Son of Louis de Balbes de Berton, duc de Crillon et de Mahon, by his first wife, Elisabeth Couvay. Married Marie-Charlotte Carbon in 1769; two sons.