The Gunfighter turned it down, despite having expressed a strong desire to play the part, because of his longstanding hatred for Columbia's president, Harry Cohn. Columbia sold the rights to Twentieth Century Fox, where the role went to Peck. Wayne's final film, "The Shootist" (1976), is often compared to "The Gunfighter" and contains numerous plot similarities. The script was loosely based on the purported exploits of an actual western gunfighter named Johnny Ringo, a distant cousin of the outlaw Younger family and a purported survivor of the infamous gunfight at the OK Corral against Doc Holliday and the Earp brothers. As in
Gunfight at the O.K. Corral was part of the Works Progress Administration. According to one report, Hayhurst was a friend of the Behan family. After he completed his transcription, he kept the original document in his home, where it was destroyed in a house fire. The interpersonal conflicts and feuds leading to the gunfight were complex. Each side had strong family ties. The brothers James, Virgil, Wyatt, Morgan, and Warren Earp were a tight-knit family, working together as pimps, lawmen, and saloon owners in several frontier towns, among other occupations, and had moved together from one town to another. Virgil served in the Union Army