That whole are was variously known as Austria, Prussia and Austro-Hungarian. The US census shows Frank Svach gave his origin as Austria, but if he was born in Holesov in Moravia as information suggests, this would have been part of the Austrian empire at that time. Also SCHWACH is a Germanic spelling. Other variants on the name I've found--Svack, Svak, Schwak, Cvach...so any and all are possibly related. If you can get any more specific info let me know. I have found more in this country but still haven't made the connection to Europe or the emigration. Do you know anything about where when your grandfather came over--if there is a relationship, it might help me track. Thanks. Pat Lyon