Also, some names don't travel well between countries/languages.
Looking at an ancestor family tree I see a Kuntz.
OK, I know it would be pronounced a little more acceptably in Germany, but it still would be the source of much cruel mirth in an English speaking country (damn, did it again!!).
Reminds me of the town of F*cking in Austria:
Now if your rellies came from there then they would be the F*cking Kuntz rather than the perhaps more common Berlin Kuntz.
I'm wondering if I am going to get away with this post....