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Jacques Joseph O'Mahoney, known professionally as Jock Mahoney, was an American actor and stuntman. He starred in two Western television series, The Range Rider and Yancy Derringer. He played Tarzan in two feature films and was associated in various capacities with several other Tarzan productions. He was sometimes credited as Jack O'Mahoney or Jock O'Mahoney. Jock entered the University of Iowa in Iowa City and excelled at swimming and diving, but dropped out to enlist in the United States Marine Corps when World War II began. He served as a pilot, flight instructor, and war correspondent. After his discharge from the Marine Corps, Mahoney moved to Los Angeles, and for a time was a horse breeder. However, he soon became a movie stuntman, doubling for Gregory Peck, Errol Flynn, and John Wayne. Most of Mahoney's films of the late 1940s and early 1950s were produced by Columbia Pictures. Like many Columbia contract players, Mahoney worked in the studio's two-reel comedies. Beginning in 1947, he starred with the Three Stooges in their films Out West, Squareheads of the Round Table (and its remake, Knutzy Knights), Fuelin' Around, and Punchy Cowpunchers. Beginning in 1950, Columbia management gave him starring roles in adventure serials. Mahoney contributed so much to this series that he was awarded featured billing and major supporting roles as well, first as villains and then as sympathetic characters. By 1952 Columbia was billing him as Jack Mahoney. Cowboy star Gene Autry, then working at Columbia, hired Mahoney to star in a television series. Autry's Flying A Productions filmed 79 half-hour episodes of the syndicated The Range Rider from 1951 to 1953. For the 1958 television season, he starred in the somewhat Western Yancy Derringer series for 34 episodes, which aired on CBS. Yancy Derringer was a gentleman adventurer living in New Orleans, Louisiana, after the American Civil War. He had a Pawnee Indian companion named Pahoo Katchewa ("Wolf Who Stands in Water"), who did not speak, played by X Brands. Pahoo had saved the life of Derringer, and thereafter was responsible for Derringer's life. In 1962, Mahoney became the 13th actor to portray Tarzan when he appeared in Tarzan Goes to India, shot on location in India. A year later, he again played the role in Tarzan's Three Challenges, shot in Thailand. Dysentery and dengue fever plagued Mahoney during the shoot in the Thai jungles, and he plummeted to 175 pounds. He needed a year and a half to regain his health. Owing to his health problems and the fact that producer Weintraub had decided to go for a "younger look" for the apeman, his contract was mutually dissolved. In the 1980s, Mahoney made guest appearances on the television series B. J. and the Bear and The Fall Guy. During the final years of his life, he was a popular guest at film conventions and autograph shows. Mahoney died of a second stroke at age 70, two days after being involved in an automobile accident in Bremerton, Washington. His ashes were scattered into the Pacific Ocean.
Filmography
Movies and shows, newest first
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2017
Tarzan: Lord of the Movies
Movie Tarzan (Archive Footage)
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2015
Salamat sa Alaala
Movie Self (archive footage)
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1996
Tarzan at the Movies, Part 2: The Many Faces of Tarzan
Movie Tarzan (archive footage)
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1984
The Master
TV show Mark Richards
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1984
The Making of the Stooges
Movie Self
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1981
Simon & Simon
TV show Oldtimer #1 in Saloon
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1981
The Fall Guy
TV show Wild Dan Wilde
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1979
When the West Was Fun: A Western Reunion
Movie Self
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1979
B. J. and the Bear
TV show
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1973
The Bad Bunch
Movie Sgt. Berry
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1972
Kung Fu
TV show Davidson
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1972
The Streets of San Francisco
TV show
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1972
Banacek
TV show Albert Bates
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1972
Emergency!
TV show Hoyt Herrold
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1970
Tarzan's Deadly Silence
Movie The Colonel
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1969
Hawaii Five-O
TV show Coley Bennett
More credits
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1968
The Love Bug
Movie Driver
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1968
Bandolero!
Movie Stoner
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1967
The Glory Stompers
Movie Smiley
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1966
Tarzan
TV show Hoby Wallington
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1966
Batman
TV show Leo
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1965
Runaway Girl
Movie Randy Minola
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1964
Moro Witch Doctor
Movie Jefferson Stark
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1964
Daniel Boone
TV show O'Connor
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1964
The Walls of Hell
Movie Lt. Jim Sorenson
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1963
California
Movie Don Michael O'Casey
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1963
Tarzan's Three Challenges
Movie Tarzan
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1962
Tarzan Goes to India
Movie Tarzan
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1961
Three Blondes In His Life
Movie Duke Wallace
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1961
Gunslinger
TV show Halsey Roland
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1960
Tarzan the Magnificent
Movie Coy Banton
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1959
Rawhide
TV show Captain Brian Donahoe
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1958
77 Sunset Strip
TV show Barry James
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1958
Yancy Derringer
TV show Yancy Derringer
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1958
Money, Women and Guns
Movie 'Silver' Ward Hogan
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1958
A Time to Love and a Time to Die
Movie Immerman
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1958
The Last of the Fast Guns
Movie Brad Ellison
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1957
Slim Carter
Movie Slim Carter (Hugh Mack)
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1957
Joe Dakota
Movie The Stranger
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1957
The Land Unknown
Movie Commander Harold 'Alan' Roberts