For any vital information from Austria and surroundings (Moravia, etc) I suggest that you go to the website Genteam.org This is a free web site, but you need to register. It has all sorts of valuable information, including births, marriages (including the location of the marriage), place of death (including addresses), date and locations of burial, location of stone, etc. This web site lists marriages well into the 1930s. I urge anyone who is doing research in Vienna and the surrounding to check out this web site, if you have not already done so.
For your request, I went to Genteam.org, then "Datenbank" drop down menu to Vienna. For the search, I simply put in Grossbard Adolf. I suggest that you explore this web site further. It appears that the two individuals you have named may have had a marriage in the military in 1917. Unfortunately, the record does not list parents - possibly because it was a military marriage. Since the record is identified by number, you may be able to follow up on this. Here is what I found:.
Liinking on "Detail" for Adolf, I found the following:
If you go to Viennese Jewish cemeteries you will find the following:
Adolf is listed under Grossbart, along with several other individuals.
I am sure that there is a wealth of more information that you can explore on Genteam.org.
Avivah R. Z. Pinski , near Philadelphia, USA