I see nothing on vern lister and maude witt ever marrying. However I did find a marriage between a vincent lachance and maude witt with a son lawrence lachance on a indian census. after maude's death her son was legally adopted by her parents as shown on the indian census. i saw anothe census dated june 1922 that showed no sign of vincent. I would see if the reservation in klamath oregon would have any info. on the marriage or vincent. Hope this is helpful.