As I recall (make way for a really obscure note in folk history) the banjo guy with Odetta was Larry Mohr. They began as a duo in San Francisco I think, made one LP together. Then Odetta took off and Mohr dropped from sight, never(?) to be heard of again. They did stuff like "Old Cotton Fields at Home" together, and Mohr had evidently heard Uncle Dave Macon, as he did a fairly decent if manic "I'll Tickle Nancy." More deponent knoweth not.
Happy New Year. —Bob Coltman