- Born on April 16, 1732 in Montertelot
- Deceased on April 2, 1785 in Rochefort-en-Terre, at the age of 52 years
Parents
- Jacques-Jean Le Marchant (1692 - 1742), sieur de Quelneuc, notaire royal à la sénéchaussée de Ploërmel
- Michelle Roullin (1702 - ), dame de Trébéno
Family
- Married with Marie Perrine Mahé ( - bef. 1768), dame du Barry
- Married on January 16, 1769 in Pipriac, with Françoise Loret (1740 - 1801), dame du Galy, issuing
- François (1774 - 1840)
Occupations
- notaire et procureur au comté de Rochefort