Guitar History
For what it's worth, Leo Fender was a Greek/American, and started his company in 1946. Fender guitars and amps have been industry standard in modern rock. His company was founded in Fullerton, California. I was reading that he lost most of his hearing working on an amplifier.
Orville Gibson started Gibson guitars in 1902. English/American from Michigan.
Jim Marshall created Marshall Amps and Cabinets in 1962, and is from England.