Question: Who was the cousin of the man called "The Great Commoner"?

Context articles: James Z. George
William Jennings Bryan
A Man Called Horse (film)
The Commoner
William Pitt, 1st Earl of Chatham
The Great Commoner
Triumphs of a Man Called Horse
Hara Takashi
Bryan House (Van Buren, Arkansas)
The Return of a Man Called Horse

James Zachariah George (October 20, 1826August 14, 1897) was an American lawyer, writer, and politician and Confederate politician and military officer.
 He was known as Mississippi's "Great Commoner."
William Jennings Bryan (March 19, 1860 – July 26, 1925) was an American orator and politician from Nebraska.
 Beginning in 1896, he emerged as a dominant force in the Democratic Party, standing three times as the party's nominee for President of the United States.
 He also served in the United States House of Representatives and as the United States Secretary of State under Woodrow Wilson.
 Because of his faith in the wisdom of the common people, he was often called "The Great Commoner".
A Man Called Horse is a 1970 American Western film starring Richard Harris and directed by Elliot Silverstein.
 Based on a short story by Dorothy M. Johnson, "A Man Called Horse", published in 1950 in "Collier's" magazine and again in 1968 in Johnson's book "Indian Country".
 The basic story was used in a 1958 episode of the TV show "Wagon Train" titled "A Man Called Horse".
 Partially spoken in Sioux, the film tells the story of an English aristocrat who is captured by the Sioux people.
The Commoner was a weekly newspaper published in Lincoln, Nebraska, from 1901 to 1923 that was owned, edited, and published by William Jennings Bryan.
 "The Commoner" was a political paper of the early twentieth century that impacted a great deal of public opinion on critical matters.
William Pitt, 1st Earl of Chatham, {'1': ", '2': ", '3': ", '4': "} (15 November 1708 – 11 May 1778) was a British statesman of the Whig group who led the government of Great Britain twice in the middle of the 18th century.
 Historians call him Pitt of Chatham, or William Pitt the Elder to distinguish from his son, William Pitt the Younger, who also was a prime minister.
 Pitt was also known as The Great Commoner, because of his long-standing refusal to accept a title until 1766.
The Great Commoner has referred to several individuals:
Triumphs of a Man Called Horse is a 1983 American Western film directed by John Hough and starring Richard Harris, Michael Beck and Ana De Sade.
 Harris reprised his role as British aristocrat John Morgan, 8th Earl of Kildare, who becomes a member of the Lakota Sioux.
 It was the final film of the trilogy after "A Man Called Horse" (1970) and "The Return of a Man Called Horse" (1976).
Hara Takashi (原 敬 , 9 February 1856 – 4 November 1921) was a Japanese politician and the 10th Prime Minister of Japan from 29 September 1918 until his assassination on 4 November 1921.
 He was also called Hara Kei informally.
 He was the first commoner appointed to the office of prime minister of Japan, giving him the informal title of "commoner prime minister" (平民宰相 , heimin saishō ) .
 He was also the first Japanese Christian Prime Minister.
The Bryan House is a historic house at 105 Fayetteville Street in Van Buren, Arkansas.
 Built in 1886, it is one of the city's finest Queen Anne Victorian houses, with asymmetrical massing, multiple gables and projecting bay sections, and elaborate exterior decoration.
 The interior also has well-preserved woodwork, hardware and other decoration.
 The house was built by Lewis Bryan as a summer house, and is notable beyond its architecture as the local headquarters for Bryan's cousin William Jennings Bryan during his runs for President of the United States.
The Return of a Man Called Horse is a 1976 American western film directed by Irvin Kershner involving a conflict over territory between Sioux Indians and white men.
 It is the sequel to "A Man Called Horse" and it was followed by "Triumphs of a Man Called Horse" in 1982.