Rathjens is pronounced rot-yens in German but
we Americans have modified it to wrath-jens.

The meaning of the name is something like, "city councilman".
Since "rath" stands for city/government (e.g. "rathaus" means "city hall") and "jens" is similar in meaning to councilman.
So one of our ancestors was likely in politics.  Is that surprising? 8^)