I'm pretty sure that some reliable info is out there, but my knowledge of his career is that prior to Zep he was a highly regarded session bassist, arranger, and producer. He produced hits for Donovan, and I believe Herman's Hermits. He may have doubled on URB, and I have seen shots of him playing EBG in an orchestral setting. My gut says that he is a product of one of the british arts colleges, but I could be wrong.
I had a chance to see him on the Zooma tour and my mind was officially *blown*. I had always defended him as the brains of the Zep juggernaut, but I may have even underestimated him. The guy is simply a musical tour de force. He is a killer keyboard player to make the likes of Billy Preston pale, his slide guitar (lap steel) chops are phenomenal, and we know what he can do on a bass. He is riding the cutting edge of live performance by implementing tools like the Kyma interactive composer.
http://en.wikipedia.org/wiki/John_Paul_Jones_(musician)
http://www.mp3.com/john-paul-jones/a...biography.html
Google, yo.