 Two French traders, Pierre-Esprit Radisson and Médard des Groseilliers (Médard de Chouart, Sieur des Groseilliers), Radisson's brother-in-law, learned from the Cree that the best fur country lay north and west of Lake Superior, and that there was a "frozen sea" still further north.Assuming this was Hudson Bay, they sought French backing for a plan to set up a trading post on the Bay, to reduce the cost of moving furs overland.According to Peter C. Newman, "concerned that exploration of the Hudson Bay route might shift the focus of the fur trade away from the St. Lawrence River, the French governor", Marquis d'Argenson (in office 1658–61), "refused to grant the coureurs de bois permission to scout the distant territory".