Thank you so much for your suggestion. I will follow up with this. I have taken the Ancestry DNA test; however, Mabel is from the Lewin family and all the families in Shenandoah and Warren have married into all the other families, so I will have some major detective work ahead of me. It is more than likely that their father is on the 1840 Warren County census. I have a copy, so will use that as well. Once again, thank you and I will certainly post if I am able to solve this mystery.