Here's a MP3 site where I was listening to what was described as "Traditional English Folk." It sure sounds like Jethro had alot of influence from Englands past.

Check it out at: http://stations.mp3s.com/stations/55/traditional_english_folk_s.html

By the way, he played in California near me (Redding) and I heard he was still awesome. Also, he invested his money in Scottish fisheries and is quite a wealthy man now:) I like to see an old rocker who didn't squander all his money!