
Personal Info
Known For
Acting
Born
February 7, 1919
Died
December 14, 1989 (age 70)
Place of Birth
Chicago, Illinois, USA
Also Known As
Jack Mahoney
Jack O'Mahoney
Jacques O'Mahoney
Jock O'Mahoney
Jacques Joseph O'Mahoney
Jock Mahoney
Biography
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.
Known For

TV
Batman
Leo
1966

TV
Batman
H.L. Hunter
1966

TV
Hawaii Five-O
Coley Bennett
1968

TV
Daniel Boone
O'Connor
1964

TV
Emergency!
Hoyt Herrold
1972

TV
Simon & Simon
Oldtimer #1 in Saloon
1981

TV
Rawhide
Captain Brian Donahoe
1959

TV
Rawhide
Vance
1959

TV
The Millionaire
Vance Ludlow
1955

TV
The Fall Guy
Wild Dan Wilde
1981

TV
77 Sunset Strip
Barry James
1958

TV
The Streets of San Francisco
1972

TV
The Streets of San Francisco
Mr. Morley
1972

TV
Tarzan
Hoby Wallington
1966

TV
Yancy Derringer
Yancy Derringer
1958

TV
The Master
Mark Richards
1984

TV
Banacek
Albert Bates
1972

TV
B. J. and the Bear
1979

TV
Gunslinger
Halsey Roland
1961

TV
Letter to Loretta
Andy Hagen
1953
Filmography
2017FilmTarzan: Lord of the Moviesas Tarzan (Archive Footage)2015FilmSalamat sa Alaalaas Self (archive footage)1996FilmTarzan at the Movies, Part 2: The Many Faces of Tarzanas Tarzan (archive footage)1984TVThe Masteras Mark Richards1984FilmThe Making of the Stoogesas Self1981TVSimon & Simonas Oldtimer #1 in Saloon1981TVThe Fall Guyas Wild Dan Wilde1979FilmWhen the West Was Fun: A Western Reunionas Self1979TVB. J. and the Bear1973FilmThe Bad Bunchas Sgt. Berry1972TVKung Fuas Davidson1972TVThe Streets of San Francisco1972TVBanacekas Albert Bates1972TVEmergency!as Hoyt Herrold1970FilmTarzan's Deadly Silenceas The Colonel1968FilmThe Love Bugas Driver1968TVHawaii Five-Oas Coley Bennett1968FilmBandolero!as Stoner1967FilmThe Glory Stompersas Smiley1966TVTarzanas Hoby Wallington1966TVBatmanas Leo1965FilmRunaway Girlas Randy Minola1964FilmMoro Witch Doctoras Jefferson Stark1964TVDaniel Booneas O'Connor1964FilmThe Walls of Hellas Lt. Jim Sorenson1963FilmCaliforniaas Don Michael O'Casey1963FilmTarzan's Three Challengesas Tarzan1962FilmTarzan Goes to Indiaas Tarzan1961FilmThree Blondes In His Lifeas Duke Wallace1961TVGunslingeras Halsey Roland1960FilmTarzan the Magnificentas Coy Banton1959TVRawhideas Captain Brian Donahoe1958TV77 Sunset Stripas Barry James1958TVYancy Derringeras Yancy Derringer1958FilmMoney, Women and Gunsas 'Silver' Ward Hogan1958FilmA Time to Love and a Time to Dieas Immerman1958FilmThe Last of the Fast Gunsas Brad Ellison1957FilmSlim Carteras Slim Carter (Hugh Mack)1957FilmJoe Dakotaas The Stranger1957FilmThe Land Unknownas Commander Harold 'Alan' Roberts1957FilmBattle Hymnas Maj. Frank Moore1956FilmShowdown at Abileneas Jim Trask1956FilmI've Lived Beforeas John Bolan / Lt. Peter Stevens1956FilmAway All Boats1956FilmA Day of Furyas Marshal Allan Burnett1955TVThe Millionaireas Vance Ludlow1954FilmOverland Pacificas Ross Granger1954FilmKnutzy Knightsas Cedric the Blacksmith1954FilmGunfighters of the Northwestas Joe Ward1953TVLetter to Lorettaas Andy Hagen1952FilmThe Kid from Broken Gunas Jack Mahoney1952FilmJunction Cityas Jack Mahoney1952FilmThe Rough, Tough Westas Big Jack Mahoney1952FilmLaramie Mountainsas Swift Eagle1952FilmThe Hawk of Wild Riveras Jack Mahoney1952FilmSmoky Canyonas Jack Mahoney1951FilmPecos Riveras Jack Mahoney1951FilmThe Lady and the Banditas Tavern Troublemaker1951FilmThe Texas Rangersas Duke Fisher1951FilmRoar of the Iron Horseas Jim Grant1951TVThe Range Rideras The Range Rider1951FilmSanta Feas Crake1950FilmFrontier Outpostas Lieutenant Peck (uncredited)1950FilmLightning Gunsas Rob Saunders1950FilmThe Kangaroo Kidas Tex Kinnane1950FilmHoedownas Stoney Rhodes1950FilmTexas Dynamoas Bill Beck1950FilmCow Townas Tod Jeffreys1950FilmCody of the Pony Expressas Jim Archer1950FilmThe Nevadanas Sandy1950FilmPunchy Cowpunchersas Elmer1949FilmRenegades of the Sageas Lieutenant Hunter1949FilmHorsemen of the Sierrasas Bill Grant1949FilmBandits of El Doradoas Tim Starling (uncredited)1949FilmRim of the Canyonas Pete Reagan1949FilmThe Blazing Trailas Full-House Patterson1949FilmThe Doolins of Oklahomaas Tulsa Jack Blake1949FilmFuelin' Aroundas Guard1948FilmSquareheads of the Round Tableas Cedric the Blacksmith1947FilmThe Stranger From Ponca Cityas Henchman Tensleep (uncredited)1947FilmOut Westas Arizona Kid1946FilmThe Fighting Frontiersmanas Waco (uncredited)1946FilmSon of the Guardsmanas Captain Kenley (uncredited)