Dierkes was born on February 10, 1905 in Cincinnati, Ohio. He attended Brown University and subsequently went to work as an economist for the United States Department of State. In 1941 he joined the Red Cross and served in the Britain duringWorld War II. There he met director John Huston who recommended that he try Hollywood after the war. Instead, Dierkes went to work for the U.S. Treasury Department which coincidentally sent him to Hollywood to function as technical advisor for the film To the Ends of the Earth (1948). Because of his appearance and very tall frame (6 feet, 6 inches), Dierkes enjoyed a long career as a character actor, often portraying villains or soldiers. In the 1953 film Shane, Dierkes portrays villain Morgan Ryker, who is the last man shot by the title character, Shane, in the final bar room shootout. One of his more memorable scenes is in the 1960 film, The Alamo. Dierkes portrays a Tennessean named Jocko, who is torn between leaving before the attack to care for his blind wife, or staying to support the Texans' cause. Understanding that if Jocko stays to fight she will likely be widowed, Jocko's wife coaxes him to stay and defend the fort, despite her disability. Dierkes died in 1975 of emphesyma and was survived by his wife Cynthia, two sons, and two daughters.
1992
as Jocko Robertson
1987
as Roderick Craven - (archive footage)
1972
as Bill Parker
1971
as Family Member
1963
as Cripple
1963
as Benjamin West / Jacob West
1963
as Preacher (uncredited)
1963
as Roderick Craven
1962
as Cell Block Guard (uncredited)
1962
as Sweeny
1961
as Ranger Bill Larsen (uncredited)
1961
as Chet
1960
as Jocko Robertson
1960
as Inspector Crail
1960
as 'Wild Bill' Monks
1959
as Gabe Hastings
1959
as Society Red
1959
as Private
1959
as Martinson
1958
as Deacon
1958
1958
1958
as Charlie
1958
as McSween
1958
as Ez
1958
as Policeman (uncredited)
1957
1957
as Bartender
1957
as Swanson
1957
as Jacob
1957
as Texas Storekeeper (uncredited)
1957
as Scanlon
1957
as Bill Sowers
1956
as Farmer (uncredited)
1956
1956
as Cross Creek Townsman (uncredited)
1956
1956
as Carson - Horgan Rider
1955
as Freil
1955
as Rydell
1955
as Ace
1955
as Indian
1955
as Dahoma
1955
as Cletus Ballard
1955
as Bursar
1954
as Swede - the Cook (uncredited)
1954
as Cpl. Fred Deane
1954
1954
as Police Sergeant
1954
as Gruber
1953
as Sheriff Daws
1953
as Batley
1953
as General Morris
1953
as Morgan Ryker
1952
as Bosun (uncredited)
1951
as Arnie
1951
as Joe Bronson
1951
as Dr. Belvedere
1951
as Jim Conklin - the Tall Soldier
1951
as Dr. Chapman
1950
as Night Court Judge (uncredited)
1950
as Jeb Bricker
1948
as Ross