- Born on March 7, 1722 in Rouen
- Deceased on February 27, 1807 in Versailles, at the age of 84 years
Parents
- Antoine Nicolas du Mesniel (1686 - 1764), marquis de Sommery
- Jeanne Thérèse Carrel (1705 - 1773)
Family
- Married on February 8, 1755 in Paris, with Jeanne Le Petit, issuing
- Armand (1768 - 1814)
Occupations
- lieutenant-colonel du régiment de dragons d'Asfeld
- gouverneur d'Obernheim