Hello Oliver,
also a thank you for the nice welcome. The data compilation by Karin Rauschning is certainly a very valuable collection. Did you only record the data in your database or did you include the sources, eg Kirchbuch Gemeinde X Nr. 32/1871 etc.? Unfortunately, many diligent data collectors forget to specify the sources. Then the information is actually just a hint. This is particularly dramatic for older primary sources lost by the war, as the data is no longer verifiable with the primary source. To my knowledge, the church books of Grunau / Altpassarge for 1800-1900 are no longer available or I see that wrong?
Best regards
Holger