I think I can help you... at least in sorting some things out.Jazak Irig is not in Montenegro it is a long way from there.. it is in the Vojvodina region of northern Serbia.Also Mariapocs is not in Serbia, Montengro nor was it ever in Yugoslavia.... it is in northern Hungary.
I know that between trying to translate from one language to another and the way it was written by American's who recorded the name, etc.. things can get confusing.
Maybe if we begin with some more current info from the US we can work back and figure out some things...
1) You said you had George's ship manifest... can you tell me the ship, date and port where he arrived... I can not find it.
2) Where did they live in the US? Just Michigan?Or did they ever live in Indiana? Or Ohio?
3) How did you come up with Jazak, Irig?
4) Were your George and Anna the ones I found listed as Joseph and Anna in Michigan?Was George's birthyear approximately 1885?