David Fitzgerald Doyle (December 1, 1929 – February 26, 1997) was an American actor. He was best known for his portrayal of John Bosley on the 1970s TV series Charlie's Angels. Doyle and Jaclyn Smith were the only actors to appear in every episode of the show. Doyle also became known later as the first voice of Grandpa Lou on the Nickelodeon series Rugrats.
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Early life
Born in Lincoln, Nebraska, Doyle graduated from Campion High School in Prairie du Chien, Wisconsin in 1947.
His maternal grandfather, John Fitzgerald, was a prominent railroad builder and banker in Nebraska. His younger sister, Mary (1931–1995), was a stage actress, who died from lung cancer aged 63.
Career
Doyle is best remembered for his role as detective John Bosley on the television series Charlie's Angels, one of only two actors (the other being original angel Jaclyn Smith) to appear in all 110 episodes of the series (1976–1981).



