Jacques de Fitzjames 
Children of Jacques de Fitzjames and Madelaine Dulong de Rosnay
- Etienne de Fitzjames b. 24 Dec 1878, d. 27 Aug 1908
- Edouard de Fitzjames+ b. 8 Oct 1880, d. 26 Mar 1914
Madelaine Dulong de Rosnay 
Her married name became de Fitzjames.
Children of Madelaine Dulong de Rosnay and Jacques de Fitzjames
- Etienne de Fitzjames b. 24 Dec 1878, d. 27 Aug 1908
- Edouard de Fitzjames+ b. 8 Oct 1880, d. 26 Mar 1914
Etienne de Fitzjames 
Edouard de Fitzjames 
Child of Edouard de Fitzjames and Sylviane Finot
- Helene de Fitzjames+ b. 25 Apr 1906
Sylviane Finot 
Her married name became de Fitzjames.
Child of Sylviane Finot and Edouard de Fitzjames
- Helene de Fitzjames+ b. 25 Apr 1906
Helene de Fitzjames
Her married name became de Cassaigne de Beaufort de Miramon-Pesteils.
Children of Helene de Fitzjames and Louis de Cassaigne de Beaufort de Miramon-Pesteils
- Emmanuel Marie Edouard de Cassaigne de Beaufort de Miramon-Pesteils b. 2 Aug 1929, d. 16 Nov 1936
- Charles Edouard Marie de Cassaigne de Beaufort de Miramon-Pesteils b. 24 Aug 1930
Louis de Cassaigne de Beaufort de Miramon-Pesteils 
Children of Louis de Cassaigne de Beaufort de Miramon-Pesteils and Helene de Fitzjames
- Emmanuel Marie Edouard de Cassaigne de Beaufort de Miramon-Pesteils b. 2 Aug 1929, d. 16 Nov 1936
- Charles Edouard Marie de Cassaigne de Beaufort de Miramon-Pesteils b. 24 Aug 1930
Emmanuel Marie Edouard de Cassaigne de Beaufort de Miramon-Pesteils 
Charles Edouard Marie de Cassaigne de Beaufort de Miramon-Pesteils
Robert de Fitzjames 
