Question: Which "Of Mice and Men" character was portrayed in 1939 by a star of the 1965 American Western film Black Spurs?

Context paragraphs:
Young Fury: Young Fury is a 1965 American Western film directed by Christian Nyby and written by Steve Fisher.  The film stars Rory Calhoun, Virginia Mayo, William Bendix, Lon Chaney Jr., Richard Arlen and John Agar.  The film was released in February 1965, by Paramount Pictures.

Lon Chaney Jr.: Creighton Tull Chaney (February10, 1906 –July12, 1973), known by his stage name Lon Chaney Jr., was an American actor known for playing Larry Talbot in the 1941 film "The Wolf Man" and its various crossovers, and Count Alucard (son of Dracula) in numerous horror films produced by Universal Studios.  He also portrayed Lennie Small in "Of Mice and Men" (1939).  Originally referenced in films as Creighton Chaney, he was later credited as "Lon Chaney Jr." in 1935, and after 1941's "Man Made Monster", beginning as early as "The Wolf Man" later that same year, he was almost always billed under his more famous father's name as Lon Chaney.  Chaney had English, French, and Irish ancestry, and his career in movies and television spanned four decades, from 1931 to 1971.

Fort Courageous: Fort Courageous is a 1965 American Western film directed by Lesley Selander and written by Richard H. Landau.  The film stars Fred Beir, Don "Red" Barry, Hanna Landy, Harry Lauter, Walter Reed and Joe Patridge.  The film was released on May 1, 1965, by 20th Century Fox.

War Party (1965 film): War Party is a 1965 American Western film directed by Lesley Selander and written by William Marks and George Williams.  The film stars Michael T. Mikler, Davey Davison, Don "Red" Barry, Laurie Mock, Dennis Robertson and Charles Horvath.  The film was released on March 1, 1965, by 20th Century Fox.

Requiem for a Gunfighter: Requiem for a Gunfighter is a 1965 American western film, the last picture directed by Spencer Gordon Bennet, produced by Alex Gordon, and starring Rod Cameron, Stephen McNally, Mike Mazurki, Dick Jones, and Olive Sturgess.

Town Tamer: Town Tamer is a 1965 American Western film directed by Lesley Selander and written by Frank Gruber.  The film stars Dana Andrews, Terry Moore, Pat O'Brien, Lon Chaney Jr., Bruce Cabot, Lyle Bettger and Richard Arlen.  The film was released on July 7, 1965, by Paramount Pictures.

Black Spurs: Black Spurs is a 1965 American Western film directed by R. G. Springsteen and written by Steve Fisher.  The film stars Rory Calhoun, Linda Darnell (in her final film role), Terry Moore, Scott Brady, Lon Chaney Jr., Richard Arlen and Bruce Cabot.  The film was released on June 25, 1965, by Paramount Pictures.

The Reward: The Reward is a 1965 American Western film directed by Serge Bourguignon based on a novel by and starring Max von Sydow, Yvette Mimieux and Efrem Zimbalist Jr.

Winchester '73: Winchester '73 is a 1950 American Western film directed by Anthony Mann starring James Stewart, Shelley Winters, Dan Duryea and Stephen McNally.  Written by Borden Chase and Robert L. Richards, the film is about the journey of a prized rifle from one ill-fated owner to another and a cowboy's search for a murderous fugitive.  The movie features early film performances by Rock Hudson as an American Indian, Tony Curtis, and James Best.  The film received a Writers Guild of America Award nomination for Best Written American Western.  This is the first Western film collaboration between Anthony Mann and James Stewart.  It was filmed in black and white.

Convict Stage: Convict Stage is a 1965 American Western film directed by Lesley Selander and written by Daniel Mainwaring.  The film stars Harry Lauter, Don "Red" Barry, Jodi Mitchell, Hanna Landy, Joe Patridge and Eric Matthews.  The film was released on June 17, 1965, by 20th Century Fox.

Supporting paragraphs: Black Spurs Lon Chaney Jr.
Answer: Lennie Small