Which musician has ties to both Keef Hartley and Ringo Starr?
Keef Hartley:  He was later a member of Dog Soldier, and variously worked with Rory Storm, The Artwoods and John Mayall. Rory Storm:  Ringo Starr was the drummer for the Hurricanes before joining the Beatles in August 1962, replacing original drummer Pete Best.
Rory Storm