- Born on January 9, 1787 in Noyelles-en-Chaussée
- Deceased on July 25, 1845 in Saint-Amand-les-Eaux, at the age of 58 years
- Burial on July 26, 1846
Parents
- Charles de Fléchin (1744 - 1801), comte de Fléchin, colonel du régiment d'Auxoy
- Marie Marguerite Madeleine Dary (1766 - 1807), dame de Martaigneville
Family
- Married on October 21, 1818 in Abbeville, with Herminie Sophie Adélaïde de Linars (1788 - 1871)