Is somebody missing the point here?

Not at all. Here's the map - X marks the spot...

It just occurs to me (considering nunclage's point) that Xerxes should probably be pronounced "churcheez" or "jurcheez" rather than (my previous pronunciation ) "gzurkseez".
Edit: Oops, already addressed by the man himself below.. at least if we all agree it should be "zurxeez"

And what about Xavier? "Haveeur" or "Haveeay" (French, I think) or "gzaveeur"?

In other words, good question, jabcka (and greetings )