I'm trying to help an elderly lady (aged 82) to find anything about her father or ancestors.He was Erno UNGAR and was probably born in Austria.He married Elsa Diamant and then they moved to Vienna where Paul (b. 1911) and Hertha (b. 1923) were born.
The only other thing she knows is that her father committed suicide in a park in Vienna, and is buried in Zentral Friedhof (grave no. 73).
I believe Erno had a sister Bertha (who married Kohler).
I just don't know where to start on non-UK genealogy, and would be extremely grateful for any help you can give.