Patrick Sky was an especially close friend and confident of Mississippi John Hurt, and served as producer on most if not all of the studio recordings John made in the '60s after his "rediscovery." As we determined recently in another thread, Pat played a bit of second guitar, quietly and dscreetly, on some of those MJH cuts.

I read somewhere that John considered Pat somewhat of a kindred soul, one of the few folks in that urban folk-revival world who seemed to share his rural/southern background.

Another thing that no one has mentioned: I'm pretty sure I remember references to Pat being of Native American heritage. Maybe only partially, I don't know.