Interestingy enough, the founder of the Zeppelin company WAS "Graf Zeppelin" ! http://en.wikipedia.org/wiki/Graf_Zeppelin
Graf is german for "Count"...
I also bet there are plenty of people in Germany with the name Zeppelin (probably as a last name, but maybe now also as a first name)...it IS a "real name" yknow. i also bet there are plenty of non-german kids with the name, probably after the band, and there are SO many unusual names nowadays kids in school wouldnt blink an eye with a name like that. my niece went to school with a "Maverick" and she didnt think it was at all strange (but laughed and laughed when looking through my old yearbooks "Renee??? someone was actually named RENEE????" she thought it was hilarious.)
when names like "Naveah" have now become totally mainstream (i remember when that name first started showing up...."its heaven backwards!! get it?!"
) i think just about anything is fair game. Its not like she is naming the kid Moon Unit.