Hello,
Thank you for your response. I do not know if the Stefancic side originally came from Austria or Hungary. I do know my great great grandmother was born in Slovenia. However in that era, Slovenia was part of the Austria-Hungary empire, and when referencing her place of birth, documents say she was born in Austria. That may or may not be your situation as well. I think I have some of her siblings names if you are interested, although I know nothing about them.

Best regards,
Scott