Harpgirl.....
To the best of my knowledge, DB has ceased performing. He lives in the Chicago area and makes violins. Can't claim its gospel, though.
Too bad, he's one of the best guitar players I've heard. I have several of his albums, plus a few numbers he did with Norman Blake. BTW, try Norman, if you haven't.
He was the subject of the Jerry Jeff Walker song "David and Me" and also played on that cut with Jerry Jeff.
.....Tiger