Is "Rossum" a Jewish surname?

I.e. Guido Rossum is Jewish and http://en.wikipedia.org/wiki/Emmy_Rossum is Jewish to. Image search also gives some Jan van Rossum (http://minus.com/lflzn1nWFHrUl), who doesn't look Aryan.

>>5
Common kike-names start with Gold-, Silver- and Perl-, because kikes just love these abstract, but useless, items. Similarly, kikes love Haskell.