Oborski family in Nanticoke

I am looking for help in finding more information / history of my father's family.My father and grandfather originated in Nanticoke, Pennsylvania.My great-grandfather, Leo Oborski was 2 years-old when his parents, Wadislaw Oborski and Catherine Stephanska emigrated from Posen, Poland and settled in Nanticoke.Leo married Catherine Sweitzer and had four childern: Joseph, Clemence Carl (my grandfather), Mary and Leona.Any help, especially tracing the family back, would be greatly appreciated.