I am trying to find my great-grandfather, who was a Polish soldier in World War 1.
He supposedly came from a noble family (I am from Slovenia), so I suppose he fought on the Austrian Italian front.
His daughter was my grandmother who was born in 1918.
My great grandfather left then (1917 probably) and went to Poland where he died or was killed (I don't know if in battle or due to other causes) probably between 1918 and 1920, since he intended to return.
My grandmother was born in Jarenina (small village in Slovenia) and she didn't know him, so the problem is that she was an illegitimate child and we know nothing else about him.
Is there any chance I can find anything about him or who he was?