A map of Austria of old:http://www.sandafayre.com/atlas/ahempia.htmhttp://users.erols.com/mwhite28/austhung.htm
Your ancestors could have been from historical region Galicia:http://www.e-targ.org/Maps/galiciamap.htmlwww.rootsweb.com/~polwgw/howto.html
Maybe they put Austria on their US record but correctly should have Austria.www.iabsi.com/gen/publicwww.tccweb.org
Do you know the village where this church was build?
What was language spoken by these ancestors?