Herr v. Roy teilt mit :
Some data concerning the – today in Germany unknown -
VON GERMETEN family are to be found here:
Kneschke, Deutsches Adels-Lexicon (i.e. German Lexicon of Nobility),
t. III, Leipzig 1861, p. 492:
http://digital.ub.uni-duesseldorf.de/ihd/content/pageview/7722427
Best Regards.