While the company's Quebec activities were modest when Havy first established the office in 1732, by 1741 he was handling a full fifth of the colony's imports.
His assistant was his cousin Jean Lefebvre, with whom he formed a partnership to pursue other business opportunities while retaining their positions at Dugard et Cie.
Eventually, Dugard et Cie's ships were lost to privateers or storms and the firm withdrew from Canada.
Lefebvre and Havy's business grew steadily, as they personally handled cargos and eventually came to own a small ship of their own, the Parfaite Union.
When the British captured Quebec in 1759 much of his and Lefebvre's assets in New France – in mortgages, Canadian paper money, and bills of exchange – were declared worthless by the new government.