- Born on May 16, 1855 in Oullins
- Deceased on November 30, 1927 in Petit-Couronne, at the age of 72 years
Parents
- Emmanuel de Montaigne de Poncins (1830 - 1902), marquis de Poncins, maire de Saint-Cyr-les-Vignes, membre de l'Académie d'agriculture
- Marie-Antoinette de Gayardon de Fenoyl (1830 - 1894)
Family
- Married on January 5, 1876 in Valeille, with Régis de Brunel de Bonneville (1846 - 1907), ingénieur, issuing
