Just found this post chain. I am a second cousin of Gigi and I have exchanged documents with her but wanted to chime in here.I was wondering if the 1901 census was from Austria/Croatia? As we know he wasn't in this country at that point.
Also, I don't know what religion he was but I have seen the 1920 census which lists his native language as German.
Also, his marriage license lists his father's name as Mike Jankovich (not sure if this is short for Nicholas, however as Gigi stated the marriage license was filled out by Steve himself, as the death certificate was obviously not.
Thank you very much for providing the information thus far. It was very interesting to read it.
Kate