He was the grandfather of Elisabeth de Castellane (1928–1991), who married Jean Bertrand Jacques Adrien Nompar, Comte de Caumont La Force (1920–1986) in Paris on 7 December 1948, and Diane Rose Anne Marie de Castellane Fernández y Anchorena (b. 1927), who first married Philippe de Noailles, Duc de Mouchy and Prince-Duc de Poix (born in Paris, April 17, 1922) on 14 April 14, 1948. They divorced on 13 March 1974.
