Mayor, aldermen, men of fiefs, (lawyers), a hostel, a hospital and outside, a leper to accommodate lepers (the disease of leprosy had been reported by the Crusaders from the East).Baldwin and his wife were still living, according to the scrolls, in 1169 in Le Quesnoy.The new count, however, preferred to remain in Valenciennes rather than Le Quesnoy.In 1184, the count had to struggle against a coalition from the sire of Avesnes, the Count of Brabant and his brother the Count of Flanders : the Hainaut was ravaged on all sides.Le Quesnoy is first attested in forms accompanied by the Latinized name of its alleged founder, called Haymon or Aymond: Haymon Quercitum; (from the Latin ‘quercus' / ‘oak’, a Latin term never imposed in Gaul.Appearing as Caisnetum in romanized charters to try to match the Picard language of the 11th to 14th century and as Haismont-Caisnoit; The Kaisnoit; The Caisnoy; Caisnoit; and Quesnoyt in property titles of the same period (surveys of Hainaut of Cambrai, and Condé).Despite this assertion, the historian Valenciennes d’Oultreman said he could be a character named Aymon: governor of Ponthieu?Furthermore, the historian Jules Duvivier would rather name an ancient Count of Hainaut: indeed, in the 8th century, portions of territories around the present town belonged to the Leudes, fellows of the Frankish kings to whom they were granted.
Under the Merovingian and Carolingian, we find no evidence of a major population centre in the vicinity.
There is a craft, however, firmly maintained until 1945 when a hundred shoemakers were still identifiable.
Shoemakers worked at home for a local company located in rue du Petit Valenciennes(now Désiré Tanis) in a kind of cottage industry.
A glassmaking factory installed near the railway track to the site of the former Intermarché collapsed after World War I.
In the Bellevue district, the remains of a factory attest to the presence of a former pottery factory.