Carlos is a 1971 West German Western television film, which has transplanted the story of Friedrich Schillers play Don Carlos from 16th century Spain to a 1915 American Western style environment. According to some the setting should be somewhere in southern Europe, while others claim its somewhere in the southwestern United States. Due to complicated contracts and shooting problems, it never had the theatrical release that was intended, and was instead shown on German TV. It was directed by Hans W. Geiendrfer, who also wrote the screenplay, and stars Gottfried John and Anna Karina.
Source: Wikipedia