Hi Elaine - Yes, I checked out all of the alternate spellings you listed - both the "B" and "P" versions. What led you to Darowa?
There was a BRUMMER Josef *um 1900 oo 25.10.1925 Orschowa to BERWANGER Katharina *28.08.1903 Dar Eltern: BERWANGER Franz and KIRSCHBAUM Elisabeth *H 136
The above is all that is listed under the BRUMMER surname. There was no PRUMMER listing.
I know there were some additions/corrections made in a later version of the book, but I did not purchase that book.
Sincerely,
Cathy Teufel O'Neill