- Born on January 23, 1861 in La Gouesnière
Parents
- Arthur de Marnière de Guer (1833 - 1902), marquis de Guer
- Marie de Kergariou (1834 - 1904)
Family
- Married on November 18, 1891 in Nantes, with Henriette Louise Cormerais (1873 - 1956), issuing
Suzanne Marie Juliette (1893 - )- Gisèle (1894 - )