Born: September 30, 1764, Paris, France
Died: August 4, 1834 (age 69 years), Castle Courtanvaux, Bessé-sur-Braye, France
Great grandchildren: Robert de Montesquiou, Bertrand de Montesquiou-Fézensac, Louise Lacuée de Cessac, and more
Children: Anatole de Montesquiou-Fézensac and Alfred de Montesquiou