Hello. You are correct. There is family from Bohemia with the name SLAJS. I just found out from my Dad who asked me to check on Ancestry.com for his cousins who were born in Cleveland, Ohio in the late 1930's to see what ever happened to them. Rose Stella (Kuchar) married Joseph John Slajs from Cleveland, Ohio. They were Bohemian and lived in the Cleveland, Ohio area. There's a strong Bohemian community there. I can see that the SLAJS family moved around a little. There are a few in Chicago, some on the East Coast, and West Coast...from this particular family. Hope this helps!
I'm Barbara Kuchar Walsh