Sadly, Roy probably got more acclaim after he passed. There is some great video of him from an old ACL. I used to see him in Pittsburgh back in the mid-'70s- he worked the bar scene on the East End. He also opened for Little Feat during the Lowell era--this was the era when you could get into such a show for a dollar with a college ID.
Brilliant guitarist. Usually followed by the slogan "that you've never heard of."
But, I think more people are aware of him these days. And of course he deserves a nod, as you gave him, @jpwarren58.