Stiassny Genealogy and Stiassny Family History Information

I have information about the family tree from my father's side Bruno Stiassny (Stastny) only back for 2 generations. The family's origin is from Slavkov, about 10 km south-east of Brno. (in German Austerlitz, historically known because of The Battle of Austerlitz). I have heard rumors that the origin of the Stiassny's goes back to ~ 1500. They have been Hussites, a Christian movement following the teachings of Czech reformer Jan Hus (1369–1415). Some of his followers converted to Judaism, so there are now Christian, Protestants and Jewish Stiassny's. If anybody has some more knowledge about this matter please contact me, Yacov Stiassny by E-mail: homecare@inter.net.il