Could you send me a scan of the documents or of the parish stamps on them? There is a town called Maria Lankowitz in Western Styria, and there is a village called Kumpitz in Carinthia. However, I believe the best prospect to identify the place would be if you send me scans or hardcopies. If you prefer the latter, I'd be glad to give you my postal address. Please let me know by a direct e-mail.
Initially, I tried to send you the message of above directly. Unfortunately, something is wrong with the e-mail address you used in the posting. Let's see whether you return to this board.