Étienne Dulong de Rosnay

• 
• Born on October 2, 1839
• Deceased on November 20, 1879 in Cannes-Écluse, at the age of 40 years

Parents

• Hermand Dulong de Rosnay (1805 - 1894), lieutenant d'infanterie
• Marie Deville (1819 - 1901)

Family

• Married on July 4, 1870 in Paris, with Geneviève de La Rochelambert Montfort (1848 - 1920), issuing
  • Gabrielle (1871 - 1938)
  • Hermand (1873 - 1939)
  • Joseph (1876 - 1939)