Barnhart Geneology

I an attempting to find some of my ancesters and/or current cousins that are related to me through my father, Marion Ambrose Barnhart.   Marion was born near Pittsburgh, Pa., perhaps in South Heights!Marions siblings were Robert Barnhart and Mary (Barnhart) Kulikowski.I have lost contact with Roberts and Mary children in the late 60's and wish to re-establish contact with them.Sincerely,Ron Barnhart301 North Bayshore DriveColumbiana, Ohio 44408RonBarnhart@comcast.net