 Other prominent deaths on this date, 1969, Rolling Stones guitarist Brian Jones drowned in his pool at the age of 27. Also in the 27 Club, 71, Doors lead singer Jim Morrison died in Paris. 1989, on this date, actor and cartoon voicist Jim Backus died at the age of 76. Remembered for his role as the millionaire castaway Thurston Howell III on TV's Gilligan Island, also was the voice of cartoon character Mr. Magoo.