 These lands had the advantage of being close to the castle at Pontoise, at the confluence of the River Oise and the Liesse stream.She built Maubuisson Abbey between the villages of Saint-Ouen and Épluches, on the left bank of the Oise.According to local legend, the name "Maubuisson" was translated from Latin as ("Cursed bush"), because of the prevalence of bandits in the surrounding woodland.