Relative of Bernhard Wohlgemuth

I am searching for any relative of Bernhard Wohlgemuth, born 1994 in Znin, last place of residence Berlin Schöneberg, Frobenstrasse 27. I know, he and his wife were deported. Bernhard Wohlgemuth was one of the witnesses of marriage of Diethild Gerechter and Leopold Reis. The marriage took place December 17 th in 1941 in Berlin-Schöneberg and I would be grateful for any available information to pass on to Diethild Gerechter´s brother.

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Amelie Döge
Chiffre 208329