Uffz. Werner Rupp
 

I have just come across the following passage:
https://books.google.pl/books?id=kbn...q=Rupp&f=false

Or this:

This early production, Focke Wulf built, Fw 190D9 W.Nr 210056 of 10./JG54 was flown by Uffz. Werner Rupp on his second operational sortie on 29 December 1944. He was shot down by 2 Typhoons of 168 RAF/439 RCAF sqn.
https://a2asimulations.com/forum/vie...hp?f=22&t=5323

Was Unteroffizier Werner Rupp, by any chance, a brother, or maybe another relative (for example, a cousin) of Friedrich Rupp, or is it just a coincidence?