In order to build my family tree I have done some research and found this:
My grandfather was born in Simeria (Hunedoara) in 1912 and his parents were
-Nicolae Rudean (born in Bampotoc- Hunedoara) and
-Otilia Polgar (born in Budapest - Hungary) whose father was Geza Polgar (born in Szolnok Hungary) and mother Unknown Gerbovics (born in Austria).
If anyone knows more about these surnames, please contact me. My email address is firstname.lastname@example.org