Pierre Gelinas dit Lacourse and M-Madeleine Bourbeau are my 5th great-grandparents. Jacques was the fourth of their eight children. I'm pasting below everything I have on Jacques; I do have quite a lot of information about his ancestors if I can be of any help to you in that regard.
Jacques Gelinas Lacourse, born at Yamachiche (Quebec) on December 29, 1712, married Jeanne Bienvenu at Kaskaskia (Illinois) on February 5, 1743; Charlotte Guillemot dite Lalande / Canada at Kaskaskia on February 3, 1749. Jacques had migrated West (possibly joining his eldest brother, Pierre) sometime after the Spring of 1735 and before February 1743.