Most likely there is some kind of relationship. I have not come across Jan Ejzak or Rosalia, but will keep them in mind. The town you mention is very close (within 5 miles) to the towns Frank Ejzak (Charziabalda) and Mary Piorkowska (Surowe) came from in Poland.
Where did Jan settle in this country? Are his decendants still living there, as well?
We are all located in Pittsburgh, PA. We have a family reunion every year in August.
Sorry for the delay in responding.
Lynn