I could try and go there and check the churchbooks, if it's possible at all (it's not too far from where I live).
Is what you have told us here all you have on this family and all that could help identify members of the family (like other given names)?
If you have more, please email me: arbit /at\ gmx dot at
As to the unsatisfying answer you got: I have experienced this myself a few times. And - while actually most Austrians had english lessons at school, they often don't really have enough practice or knowledge in order to understand your queries. That may be the reason for what you heard back.