The vast majority of that area was French speaking Metis or "Mixed" people who referred to themselves as Creole, mostly loyal to Quebec. Some of the "White" (Only Americans were called "White") soldiers from the War of 1812 took native wives and stayed, one of my children's ancestors on their mother side was a U.S. soldier from Kentucky during the War of 1812, he stayed and married a girl with native blood. I'll share his photo, and story of a deer hunting trip he went on with Jefferson Davis while Davis was at Fort Howard. (Green Bay) I'm quite confident the records are true, but I'll keep digging for more info. Not sure any DNA could be matched based on Davis' few admitted offspring.