Holt had three sons and one daughter.
Holt moved to Oklahoma in the late 1940's and maintained his residence there. He would commute to Hollywood when making a movie.
Holt had one brother named David.
Holt's mother, Margaret Woods, was an actress in silent films.
Holt made a rare TV appearance in 1969 when he guest starred in an episode of The Virginian.
Holt is buried in Memory Lane Cemetary in Harrah, OK.
Holt was posthumously inducted into the Hall of Great Western Performers of the National Cowboy and Western Museum in 1991.
Holt played Charles Boyer's son in the 1940 film Back Street.
Holt's third marriage was to Birdie Stephens in 1952. It lasted until his death in 1973.
Holt's second marriage was to Virginia Ashcraft. It ended in divorce.
Holt's first marriage was to Alice Harrison. It ended in divorce.
Holt played Virgil Earp in the classic 1946 Western My Darling Clementine.
Holt received a Purple Heart for wounds suffered in a bombing raid over Tokyo on the last day of World War II.
Holt served in the Army Air Corps during World War II as a bombardier in a B-29.
According to Hollywood lore, Holt was the "fastest draw" in the movies.
Holt's sister, Jennifer, was a popular actress in B Westerns during the 1940's.
At the time of his death, Holt had left Hollywood behind and was managing a radio station in Shawnee, OK.
Holt's role in Treasure of the Sierra Madre was originally intended for John Garfield but Holt was cast because star Humphrey Bogart absolutely refused to work with Garfield.
Holt's father, Jack, had a bit part in Treasure of the Sierra Madre. He plays one of the derelicts in the flophouse listening to Walter Huston talk about his past adventures in gold prospecting.
Holt graduated from Culver Military Academy in Indiana.
Holt's father, Jack Holt, was a silent film actor.