famous people who died of lung cancer

R & P: Guess the musicians, because of information?
1.A member of The Beatles, Yoko Ono's partner, shot in 1980. 2.Moved to Paris grew a beard and became overweight and died at 27. 3.An influential American folk singer with the initials "BD". 4.A former Beatle Traveling Wilbury and died of lung cancer in 2001, shortly after being assaulted and attacked, which would probably not help. 5.A very famous singer rock n 'roll often referred to "The King" who died in the infamous toilet in 1977. FABS 4 ever!: No, my friend, was lung cancer.
1. David St. Hubbins 2. I (except the move to Paris and parts of die) 3. Bob Denver (Gilligan) 4. Clarence Beatle "The 5th" Walker 5. Richard Petty # 43