- Born on January 7, 1706 in Aire-sur-la-Lys
- Baptized the next day at collégiale Saint-Pierre
- Deceased on October 28, 1776 in Quiestède, at château de Laprée, at the age of 70 years
Parents
- François Jean Jacques de Lencquesaing (1670 - 1720), écuyer, seigneur de Laprée, mayeur d'Aire, lieutenant-colonel d'infanterie
- Marie Louise Rogier (1682 - 1710)
Family
- Married on September 28, 1733 in Mérignies, at château de Molpas, with Marie Joseph Eugénie du Puich (1709 - 1748), issuing
- Louis Dominique Eustache (1734 - 1805)
Marie Louise Joseph (1737 - 1826)- Marie Charlotte (1739 - 1805)
Occupations
- grand bailli d'épée de Saint-Omer (1760 - )