What about 'Rosenberg', which is both a Jewish surname and the surname of one of History's most virulent anti-semites? Yet another Germanic name that Ashkenazi Jews have adopted:)    German and Jewish (Ashkenazic): habitational name from any of numerous places so named (rose mountain).   Swedish, Danish, and Jewish (Ashkenazic): ornamental name composed of the elements  ros(e)  rose + the affix  -en  (taken from German) +  berg  mountain.   http://www.ancestry.com/facts/rosenb...y-history.ashx