My great-great grandmother, Mary McAllister, was born in Boston, KY, on 24 Dec 1846. Ancestry says Boston is in Jefferson County but other searches say it's Nelson county. Can you help me? I can find nothing about her prior to her coming to MN in 1869 (wife of Jacob Barge). I have her obit that says she "grew to young womanhood in her native state," so if I can find the correct 1850 census, maybe I could find her. I don't know her parents' names either. Thanks!