Looking for All Decendants of John Rankin of Ohio

My name is Wes Dates , Grandfather was Robert L. Rankin , his father was Enis Rankin of Hamilton, Ohio and his father was John Rankin , An Irish man who settle down in Ripley , Ohio. He also helped slaves to freedom. If you are related I would love to know, because you are family and I am researching my Roots. Thanks