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Background of the Show. The Gunsmoke TV series started out as a radio show in 1952 with the actor William Conrad doing the role of Matt Dillon, the town marshall. The show was on the radio for 9 years. John Wayne was the first choice to play Marshall Dillon when the show was added to the TV lineup in 1955.
James Arness portrayed Marshal Matt Dillon on Gunsmoke for 20 years after the series debuted in 1955. James Arness, who burnished the legend of Americaâs epic West as Marshal Matt Dillon, the laconic peacemaker of Dodge City on âGunsmoke,â one of the longest-running dramatic series in television history, died on Friday at his home in Los Angeles. He was 88.