The seaside resort of Bois-de-Cise is resulting from the allotment of a wooded small dry valley. The latter formed is a vaster forest, which the size ceased to reduce since grubbings of the monks Benedictines during the Middle Ages and their setting in progressive culture (source: Monborgne).
You find still not far from Bois-de-Cise the wood of Rompval (commune of Mers-les-Bains) and that of Lamotte (commune of Saint-Quentin-la-Motte-Croix-au-Bailly), dependent on this same old forest. Under the Old mode, Bois-de-Cise, hunting ground, belong to Chatellenie d' Ault whose also the castle depends on the Mound rebuilt after 1794, commune of Saint-Quentin-la-Motte-Croix-au-Bailly). Tourist guides specify us the history of the grounds at the 19th century, with some uncertainties: wood belonged to the origin with the Delorgne family (or Delegorgue?) of Souplicourt; in 1853 (or 1863), it passes between the hands of the president of the Chamber of commerce of Dieppe, certain a Saint-Hilaire-Dufour, who made an appointment of hunting of them.
This last yields it in 1883 to Mr. Chardin, remaining in Tréport (Seine-Maritime). Jean-Baptiste Theulot, wine merchant with Mercurey (Saône-et-Loire) and nephew of Large Louis, founder of the close station of Onival (common d' Ault), buys its first grounds of Bois-de-Cise worms 1896 imposition of the land register in 1899), in this same Chardin (source: cadastres of the undeveloped properties).
A schedule of conditions is established on February 5, 1898, regulating the allotment of almost 500.000 square meters of grounds, divided into 400 batches whose surface varies from 180 with more than 1700 square meters, the variable prices according to the situation on the site, from 8 to 25 francs the square meter in 1898 (source: Theulot and Monborgne).