Doubtful nations

From a 1734 letter of Father Nau to Rev. Father Richard, from a collection of Nouvelle-France Jesuit correspondence (Gosselin 1914:324; my translation):

He [Father Aulneau] may next spring go on an expedition to the Western Sea, for the Court is absolutely keen on having more concerning it than just conjectures.

The French who this year returned from the upper country reported to us that the savages told them that, eleven hundred leagues from Quebec,  … ⇒