Are you looking for information about the people you've named, or to get in touch with relatives?
Do you have any dates on your granparents? Birth, death, when they lived in Rockaway, when they didn't live in Rockaway?
I've done a good bit of work on the Poehlman surname in the census. If you'd like to do so, you may email me privetly at pete dot genealogy at sbcglobal dot net.