Mahoney is of French and Irish extraction, with some Cherokee. At the
University of Iowa, he was outstanding in swimming, basketball and
football. When World War II broke out, he enlisted as a Marine fighter
pilot and instructor. In Hollywood, he was a noted stunt man, doubling
for
Errol Flynn,
John Wayne, and
Gregory Peck.
Gene Autry signed him for the lead in
his 78-episode
The Range Rider (1951) TV series. He tested to replace
Johnny Weissmuller, as
Tarzan but lost out to
Lex Barker. In 1960, he played the heavy in
Gordon Scott's
Tarzan the Magnificent (1960), and his part there led
Sy Weintraub to hire him as
Scott's replacement. In his two Tarzan movies, he did all his own
stunts. In
Tarzan's Three Challenges (1963), he continued working in spite of dysentery, dengue
fever and pneumonia. By this time, Weintraub was looking for a younger
Tarzan, envisioning a future TV series. By mutual agreement, his
contract with Mahoney was dissolved. After a couple of years regaining
his strength and weight, Jock returned to making action
films.
The All American Cowboy(1985)
The Master(1984)as Mark Richards
The Fall Guy(1981)as Wild Dan Wilde, Gus Flint, Yancy Derringer
Simon & Simon(1981)as Oldtimer #1 in Saloon
B.J. and the Bear(1978)as Jason T. Willard, Angus Wainsley
Tarzan the Ape Man(1981)
Bandolero!(1968)
Against All Flags(1952)
The Kid from Broken Gun(1952)
Junction City(1952)
Yancy Derringer(1958)
Battle Hymn(1957)
Hoedown(1950)
Our World(1986)as Self
The Making of The Stooges(1984)as Self - Interviewee
When the West Was Fun: A Western Reunion(1979)as Self
The Mike Douglas Show(1961)as Self - Actor
The Merv Griffin Show(1962)as Self
Hey Moe, Hey Dad!(2015)as Various Characters
Tarzan at the Movies, Part 2: The Many Faces of Tarzan(1996)
TV's Western Heroes(1993)as Yancy Derringer
The A-Team(1983)as The Range Rider
