- Born on February 22, 1729 in Mons
- Deceased in 1760, at the approximate age of 30 years
Parents
- Charles Antoine Cossée (1701 - 1757), chevalier, seigneur de Semeries
- Marie Thérèse Éléonore de Le Tenre (1695 - 1739)
Family
- Married on August 9, 1757 in Ath, with Marie Hélène de Pestre (1735 - 1804), issuing
- Jean (1759 - 1834)