Hollywood cowboy John Wayne used to hang out with a famous real-life cowboy. Later in life, Wyatt Earp visited movie sets to choreograph historical gunfights and share stories with young actors. One of them was a teenage John Wayne, who studied the way Earp walked and talked. When Wayne later starred in westerns, he channeled Earp and credited him as the inspiration for some of his characters. Source Source 2 Source 3