- Born on April 7, 1878 in Montfort-sur-Meu
- Deceased on May 14, 1942 in Dinan, at the age of 64 years
Parents
- Guy Marie du Couëdic du Cosquer (1848 - 1939), maire de Moncontour, maire du Quillio
- Victoire Marie Caroline Augustine Gardin du Boisdulier ( - 1933)
Family
- Married on April 17, 1906 in Montireau, with Marie Jeanne Françoise d'Anthenaise (1878 - 1951)
Occupations
- officier de cavalerie