Mary B: Sorry, I don't have the census information for NY or WI yet. I have no Davidsons, other than Mary. Mary Davidson McKinney's daughter, Ann Jane b. 1831 NY, married in Franklin Co., NY and stayed in NY. Several of your census postings are possibilities. Ann and several members of her family were in Camillus, Onondaga Co., Tompkins, Chemung, Schuyler, and Schenectady, NY. I may know more after Sat. I plan on going to the library in Ft. Wayne, IN. I'll let you know if I find anything. Thanks, Patty