• Born: 28 Apr 1846, Guerbaville, La-Mailleraye-sur-Seine, Seine-Maritime, Haute-Normandie, France
• Married: 10 May 1872, Notre Dame de Bliquetuit, Seine-Maritime, Haute-Normandie, France

  Marriage Information:

Constant married Hernestine Aimée Saillenfaits, daughter of Jean Baptiste "Augustin" Saillenfaits and Virginie Pascale Prunier, on 10 May 1872 in Notre Dame de Bliquetuit, Seine-Maritime, Haute-Normandie, France. (Hernestine Aimée Saillenfaits was born on 17 May 1852 in Notre Dame de Bliquetuit, Seine-Maritime, Haute-Normandie, France.)