Sibylle Theard
Benedictine Theard
Michelle de Maistre
Ferdinand de Gontaut-Biron 
Child of Ferdinand de Gontaut-Biron and Ferdinande de Lesseps
- Ferdinand de Gontaut-Biron b. 25 Jan 1892, d. 2 Feb 1892
Ferdinande de Lesseps 
Her married name became de Gontaut-Biron.
Child of Ferdinande de Lesseps and Ferdinand de Gontaut-Biron
- Ferdinand de Gontaut-Biron b. 25 Jan 1892, d. 2 Feb 1892
Ferdinand de Gontaut-Biron 
Charles de Gontaut-Biron 
Antoine de Gontaut-Biron 
Children of Antoine de Gontaut-Biron and Cecile de la Panouse
- Louis de Gontaut-Biron b. 31 Jan 1878, d. 9 Dec 1907
- Marie de Gontaut-Biron+ b. 17 Mar 1883, d. 8 Jul 1971
- Therese de Gontaut-Biron b. 5 Apr 1888
- Armand de Gontaut-Biron b. 18 Apr 1890, d. 30 Oct 1918
Cecile de la Panouse 
Her married name became de Gontaut-Biron.
Children of Cecile de la Panouse and Antoine de Gontaut-Biron
- Louis de Gontaut-Biron b. 31 Jan 1878, d. 9 Dec 1907
- Marie de Gontaut-Biron+ b. 17 Mar 1883, d. 8 Jul 1971
- Therese de Gontaut-Biron b. 5 Apr 1888
- Armand de Gontaut-Biron b. 18 Apr 1890, d. 30 Oct 1918
Louis de Gontaut-Biron1 
