He was one of the best. The only folk singer I ever really enjoyed. Going to miss him.
I watched a documentary on his life a couple of times recently. It was on Amazon Prime video and once on Tubi IIRC. It was almost an extended interview, and it was quite good. The guy lead a rough rock start life style for many years. That probably took a lot out of him, shortened his life.
Edited to add that I have his Gord's Gold album. Great stuff on that disc.