I would recommend you find some of the US documents which should give you a precise place of birth.You need to have a precise location to proceed with the research. Do you know language spoken by your ancestor? John would have come as Janos. Most of our ancestors came from a small villages. Map of Austria-Hungary http://users.erols.com/mwhite28/austhung.htmhttp://users.erols.com/mwhite28/austhung.htm Take a look in www.ellisislandrecords.orgYou just might find your ancestor's arrival manifest.