Rob Williams - Orangejack

This is a song that has always fascinated me. Here's the lyrics in case you don't remember it:

John Jacob Jingle-Heimer Schmitt
That's my name too.
And whenever I go out,
The people always shout,
There goes John Jacob Jingle-Heimer Schmitt,
Tra-la-la-la-la-la-la

Here's what I don't get: how could there be two people named "John Jacob Jingle-Heimer Schmitt"?!?! I guess the good thing about that name is you're pretty popular. But I don't know either one of them.