Hello Louise,
Maybe the data your are looking for is still protected ( birth registers are available 110 year, marriage after 70 year ) in Hungary. What is the date of birth? Do you know if he was married in Hungary as well? Maybe that record is already available. For research in Hungary I normally use the familysearch page, the indexing is almost completed now, so it became much easier.
I speak hungarian, i can offer help in your research.
Zsuzsa