Question: The Eagle's Brood starred which film actor who also played the role of Hopalong Cassidy?

full_context: Document 1: Along the Navajo Trail (film): Along the Navajo Trail is a 1945 American western film directed by Frank McDonald and starring Roy Rogers, George 'Gabby' Hayes and Dale Evans. The film's story was based on a William Colt MacDonald novel. The film marked the debut of the Cuban actress Estelita Rodriguez, who Republic Pictures then began to build up into a star. Its title song is "Along the Navajo Trail", an instrumental version of which appears with the opening credits, with a brief vocal version during the last twenty seconds of the film. The first few bars of the song are used as background music in several chase scenes.
Document 2: The Boy from Oklahoma: The Boy from Oklahoma is a 1954 Western movie directed by Michael Curtiz and starring Will Rogers, Jr. The film became the basis for the 1957 Warner Bros. television series "Sugarfoot", in which Will Hutchins replaced Rogers as lead character Tom Brewster. The movie features Lon Chaney, Jr. and includes one of future TV talk show host Merv Griffin's few theatrical film roles. In the movie version, Rogers as Brewster substitutes facility with a twirling rope, similar to Will Rogers, Sr.'s, for the usual unerring speed and accuracy with firearms typically found in cinematic cowboy heroes.
Document 3: William S. Hart: William Surrey Hart (December 6, 1864 – June 23, 1946) was an American silent film actor, screenwriter, director and producer. He is remembered as a foremost western star of the silent era who "imbued all of his characters with honor and integrity." During the late 1910s and early 1920s, he was one of the most consistently popular movie stars, frequently ranking high among male actors in popularity contests held by movie fan magazines.
Document 4: List of Hopalong Cassidy films: This is a chronological list of all films featuring the character Hopalong Cassidy, played by actor William Boyd.
Document 5: Hoppy Serves a Writ: Hoppy Serves a Writ is a 1943 Western film directed by George Archainbaud and starring William Boyd as Hopalong Cassidy. The supporting cast features Andy Clyde, Victor Jory and George Reeves. The film remains noteworthy today as one of the earliest performances (his 3rd) of unshaven newcomer Robert Mitchum, who made an impression upon the studio by generating a surprising fan mail response exactly as Clark Gable had after playing an extremely similar unshaven role in "The Painted Desert", a Western starring William Boyd produced a dozen years earlier.
Document 6: Song of the Eagle: Song of the Eagle is a 1933 American pre-Code drama film directed by Ralph Murphy and written by C. Graham Baker, Willard Mack, Casey Robinson and Gene Towne. The film stars Charles Bickford, Richard Arlen, Mary Brian, Jean Hersholt, Louise Dresser, Andy Devine and George E. Stone. It was released on April 28, 1933, by Paramount Pictures.
Document 7: The Eagle's Eye: The Eagle's Eye is a 1918 American serial film consisting of 20 episodes that dramatizes German espionage in the United States during World War I. It features King Baggot in the lead role as the daring espionage agent. Among the events depicted are the sending of the Zimmermann Telegram, Franz von Rintelen's attempts to sabotage cargo loading in San Francisco Harbor, and the capture of the German espionage plans. It was directed by George Lessey, Wellington A. Playter, Leopold Wharton, and Theodore Wharton, and produced by the Whartons Studio. The serial is now considered lost. Because this serial was a commercial failure, it was the last one made by Whartons due to the studio being forced to declare bankruptcy.
Document 8: Hop-Along Cassidy: Hop-Along Cassidy is a 1935 American western film, featuring the character "Hop-Along Cassidy" created by writer Clarence E. Mulford. This is the first of 66 "Hopalong Cassidy" films produced between 1935 and 1948 and all starring William Boyd in the title role. William Boyd was originally offered the role of Buck Peters, the ranch foreman, but decided to take the role of Hop-Along instead.
Document 9: William Boyd (writer): William Boyd, CBE (born 7 March 1952) is a Scottish novelist and screenwriter.
Document 10: The Eagle's Brood: The Eagle's Brood is a 1935 American Western film directed by Howard Bretherton and written by Doris Schroeder and Harrison Jacobs. The film stars William Boyd, James Ellison, William Farnum, George "Gabby" Hayes, Addison Richards, Nana Martinez and Frank Shannon. The film was released on October 25, 1935, by Paramount Pictures.
Document 11: William Boyd (actor): William Lawrence Boyd (June 5, 1895 – September 12, 1972) was an American film actor known for portraying the cowboy hero Hopalong Cassidy.
Document 12: The Manchu Eagle Murder Caper Mystery: The Manchu Eagle Murder Caper Mystery is a 1975 film starring former “Bowery Boys" members Gabriel Dell and Huntz Hall, Jackie Coogan, and Joyce Van Patten. The film is a spoof of the 1941 film noir, "The Maltese Falcon", starring Humphrey Bogart. The cast also includes Barbara Harris, Anjanette Comer, Will Geer, Sorrell Booke, Vincent Gardenia, Nita Talbot and Nicholas Colasanto. The film was written by Dell and Dean Hargrove and directed by Hargrove. It was released by United Artists.
Document 13: Gun Brothers: Gun Brothers is a 1956 Western starring Buster Crabbe and Ann Robinson. It was Crabbe's first feature film in six years.
Document 14: The Thundering Herd: The Thundering Herd is a 1933 American pre-Code Western film directed by Henry Hathaway and starring Randolph Scott, Judith Allen, Buster Crabbe, Noah Beery, Sr. and Harry Carey. Based on the novel "The Thundering Herd" by Zane Grey, the film is about two buffalo hunters (portrayed by Randolph Scott and Harry Carey) who face dangers with the Indians and a gang of outlaws. "The Thundering Herd" is a remake of the 1925 film "The Thundering Herd". Both Noah Beery, Sr. and Raymond Hatton, Wallace Beery's frequent screen comedy partner during the late 1920s, reprised their roles. The film is now in the public domain and also known as Buffalo Stampede, the title Favorite Films used in their 1950 reissue of the film. Hathaway directed much of the same cast (Scott, Beery, Carey and Crabbe) that same year in another Zane Grey story, "Man of the Forest".
Document 15: The Eagle (2011 film): The Eagle is a 2011 epic historical drama film set in Roman Britain directed by Kevin Macdonald, and starring Channing Tatum, Jamie Bell and Donald Sutherland. Adapted by Jeremy Brock from Rosemary Sutcliff's historical adventure novel "The Eagle of the Ninth" (1954), the film tells the story of a young Roman officer searching to recover the lost Roman eagle standard of his father's legion in the northern part of Great Britain. The story is based on the Ninth Spanish Legion's supposed disappearance in Britain.
ground_truth: William Lawrence Boyd