 He also acquired property in the province, including land holdings at Saint-Roch, which he was able to have designated a fief; he also purchased the sub-fief of La Mistanguienne (also known as Montplaisir) and the seigneury of Aubert-Gallion.In 1779, he purchased the seigneury of Beaulac and part of Chambly; he later acquired part of Île-d'Anticosti.He secretly married Marie-Anne-Catherine Fleury Deschambault, widow of Charles-Jacques Le Moyne de Longueuil, 3rd Baron de Longueuil, in the Catholic Church, marrying her publicly in 1770 at the Anglican church in Montreal.