George HARTNEK & Mary MALENGAL

My great-grandfather was George HARTNEK of Kenosha, Wis.I'm not sure of the spelling of my great-grandmother's maiden name, but her first name was Mary. They immigrated from Slovakia, where their parents were tinkers in the Carpathian mountains.Their children were Rudolph (my grandfather), Stella, Marie and Louis.I'm interested in finding about their parents as well as their descendants.