Du Quesnoy

The du Quesnoy family is a French noble house of medieval and chivalric lineage.

Origin
The family originated in Normandy and was first mentioned in a Papal Bull issued by Pope Alexander III, dated May 17, 1181, to acknowledge its endowment of the Priory of Saint-Lô du Bourg-Achard; its lineage, however, has only been established since 1378. Near the mid-sixteenth century, the family was divided in two main branches, which are now extinct. The cadet branch, extant until 1897, was raised to a barony by King Louis XIII in August 1636, and elevated to the rank of marquis in July 1714.