- Born on February 14, 1900 in Silly-la-Poterie
- Deceased in 1973 in Angers, at the approximate age of 72 years
Parents
- Georges de Baynast de Septfontaines (1872 - 1956), marquis de Baynast
- Marie Le Pelletier (1876 - 1958)
Family
- Married with Madeleine Pigeaud (1899 - 1983), issuing
- Private
- Wallerand (1932 - 2020)
- Private
- Private
Occupations
- membre de l'Académie des sciences, belles-lettres et arts d'Angers (associé)