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Carradine was born on December 8, 1936 as John Arthur Carradine, in Hollywood, California, the oldest child of actor John Carradine and his wife Ardanelle Abigail (McCool). He was a half-brother of Bruce, Keith, Christopher, and Robert Carradine, and an uncle of Ever Carradine and Martha Plimpton, most of whom are also actors. Primarily of Irish descent, he was a great-grandson of Methodist evangelical author Beverly Carradine and a grandnephew of artist Will Foster. Called Jack by his family, Carradine's childhood was turbulent.

On June 3, 2009, at the age of 72, David Carradine was found dead in his room at the Swissotel Nai Lert Park Hotel on Wireless Road, near Sukhumvit Road, in central Bangkok, Thailand. He was in Bangkok to shoot his latest film, titled Stretch. A police official said that Carradine was found naked, hanging by a rope in the room's closet, causing immediate speculation that his death was suicide. However, reported evidence suggested that his death was accidental, the result of autoerotic asphyxiation. Two autopsies were conducted, one involving the celebrity pathologist Pornthip Rojanasunan, and both concluded that the death was not a suicide. The cause of death became widely accepted as "accidental asphyxiation." Immediately following his death, two of Carradine's former wives, Gail Jensen and Marina Anderson, stated publicly that his sexual interests included the practice of self-bondage. Anderson, who had plans to publish a tell-all book about her marriage to Carradine, said in an interview with Access Hollywood, "There was a dark side to David, there was a very intense side to David. People around him know that." Previously, in her divorce filing, she had claimed that "it was the continuation of abhorrent and deviant sexual behavior which was potentially deadly." Photographs of Carradine at the death scene, as well as photographs of his autopsied body, were circulated in newspapers and on the Internet. His family, represented by his brothers, Keith and Robert, pleaded with the public and the press to let them mourn their loved one in peace. Carradine's funeral was held on June 13, 2009, in Los Angeles. His bamboo casket was buried at Forest Lawn Memorial Park. Among the many stars and family members who attended his private memorial were Tom Selleck, Lucy Liu, Frances Fisher, James Cromwell, Steve Railsback, and Chris Potter. His grave was marked on December 3, 2009. The monument proclaimed him to be "The Barefoot Legend" and included a quote from "Paint", a song he wrote and performed as the theme to Sonny Boy, as an epitaph.
David Carradine