Well, this (click) is the only reference to "Waukesha Wizard" that I found of the Internet, but it's not quite clear to me that Les Paul is the "wizard," but I guess that's the case. allmusic.come says Les Paul was born in Waukesha on June 9, 1915.

Hey, I've been to Winnetka, too. I know there's some connection between Winnetka and Jack Benny, but Benny was born in Chicago.
I guess I have to admit that half the time, I don't know what the hell Fielding is talking about. [grin]
-Joe Offer-