John Lewis Hart (December 13, 1917 – September 20, 2009), also credited as John Hilton, was an American film and television actor. In his early career, Hart appeared mostly in westerns. Although Hart played mostly minor roles in some fairly well known films, he was probably best known for having replaced Clayton Moore in the television series The Lone Ranger for one season (1952–53). Career Hart began his screen career in 1937 with a bit part in Daughter of Shanghai. He continued in a variety of B pictures such as Prison Farm and King of Alcatraz before appearing in two of Cecil B. DeMille's films The Buccaneer (1938) and North West Mounted Police (1940). In 1941, Hart's acting career was interrupted when he was drafted into the United States Army. He rose to the rank of first sergeant in the Coast Artillery and eventually served in the Philippines. Following his military service, Hart worked frequently for Sam Katzman; he was given the lead role in the Jack Armstrong (1947) film serial. Hart did stunt work and acted in numerous westerns. Hart was eventually offered the opportunity to replace Clayton Moore on The Lone Ranger television series. Based on the assumption that the masked character, rather than the actor, was the true star of The Lone Ranger, the program's producers fired Moore (presumably over salary differences) and replaced him with Hart, who was of a similar build and had a comparable background in Westerns. However, the public never truly accepted Hart as the Lone Ranger, and by 1954 the producers returned Moore to the role. According to Clayton Moore's autobiography I Was That Masked Man, Moore never knew why he was replaced by Hart, and also stated that he had not sought a pay increase. Hart acted in minor roles in two episodes of The Lone Ranger before being asked to replace Clayton Moore for the entire third season. The episodes were "Rifles and Renegades" (#34) and "Sheriff at Gunstock" (#46). Hart continued to act in films for more than two decades, appearing in films of several genres, almost always in supporting roles. Hart appeared twice on the TV series I Love Lucy as Lucy's old boyfriend and again in the Hollywood episodes as a lifeguard at the hotel pool. In 1955, Hart starred in the serial The Adventures of Captain Africa, which was originally intended to be a new movie