How one has to pronounce the name maybe important, yes, but I think, it differs. What seems to be important is, that "Heuermann" gets written in so many versions and mostly wrong, it's an agony to see it. Probably it means, that his data are found everywhere and nowhere.
PS: For me the name is sounding 100% German, and mentally I call him like I would call an "Heuermann" in German. I just now have a memory flash: I have known a man with the same name 55 years ago: attractive and being in the building industry (how fitting). Driving hot cars (BMW), but no killer, afaik.