I remember seeing him perform with some other groups way back in the '60s. He just passed away at the age of 70 years.
http://www.npr.org/blogs/thetwo-way/2014/07/17/332226923/blues-guitarist-johnny-winter-dies-at-70
http://www.npr.org/blogs/thetwo-way/2014/07/17/332226923/blues-guitarist-johnny-winter-dies-at-70