- Born on February 4, 1893 in Paris
- Deceased on September 19, 1979 in Saint-Félix-de-Pallières, at the age of 86 years
Parents
- Eugène Demarçay (1852 - 1903), chimiste, polytechnicien (X 1870)
- Jeanne Bérard (1864 - 1933)
Family
- Married on November 25, 1935 in Paris, with Monique de Seynes (1911 - 1995), issuing
- Private
Private