Question: James Johnson born in 1774, was a U.S. Representative from Kentucky, what's the name of his brother, the ninth Vice President of the United States? 

Context paragraphs:
United States presidential election: The election of President and Vice President of the United States is an indirect election in which citizens of the United States who are registered to vote in one of the 50 U.S. states or Washington, D.C. cast ballots for members of the U.S. Electoral College, known as electors.  These electors then in turn cast direct votes, known as electoral votes, for President and Vice President.  The candidate who receives an absolute majority of electoral votes for President or Vice President (currently, at least 270 out of a total of 538) is then elected to that office.  If no candidate receives an absolute majority for President, the House of Representatives chooses the President; if no one receives a majority for Vice President, then the Senate chooses the Vice President.

Office of the Vice President of the United States: The Office of the Vice President includes personnel who directly support or advise the Vice President of the United States.  The Office is headed by the Chief of Staff to the Vice President of the United States, currently Nick Ayers.  The Office also provides staffing and support to the Second Lady of the United States.  It is primarily housed in the Eisenhower Executive Office Building, with offices for the Vice President also in the West Wing, the U.S. Capitol and in the Vice President's official residence.

James A. Winnefeld Jr.: James Alexander "Sandy" Winnefeld Jr. (born April 24, 1956) is a retired(On Special Mission in Afghanistan).  United States Navy admiral who served as the ninth Vice Chairman of the Joint Chiefs of Staff from August 4, 2011 to July 31, 2015.  He previously served as the fourth Commander, U.S. Northern Command (USNORTHCOM) and the 21st Commander, North American Aerospace Defense Command (NORAD) from May 19, 2010 to August 3, 2011.  Prior to that, Winnefeld served as Director for Strategic Plans and Policy, The Joint Staff which he concurrently served as the Senior Member, U.S. Delegation to the U.N. Military Staff Committee.  His other operational commands include serving as the Commander, U.S. Sixth Fleet and Commander, Allied Joint Command Lisbon.  As the Vice Chairman of the Joint Chiefs of Staff, Winnefeld was the second highest-ranking officer in the United States Armed Forces, second only to the Chairman of the Joint Chiefs of Staff.  In 2015, he retired from the Navy after over 37 years of service.

Gerald Ford: Gerald Rudolph Ford Jr. (born Leslie Lynch King Jr.; July 14, 1913 – December 26, 2006) was an American politician who served as the 38th President of the United States from August 1974 to January 1977, following the resignation of Richard Nixon.  Prior to this he served eight months as the 40th Vice President of the United States, following the resignation of Spiro Agnew.  He was the first person appointed to the vice presidency under the terms of the 25th Amendment, and consequently the only person to have served as both Vice President and President of the United States without being elected to executive office.  Before his appointment to the vice presidency, Ford served 25 years as U.S. Representative from Michigan's 5th congressional district, the final nine of them as the House Minority Leader.

Richard Mentor Johnson: Richard Mentor Johnson (October 17, 1780 – November 19, 1850) was the ninth Vice President of the United States from 1837 to 1841.  He is the only vice president ever elected by the United States Senate under the provisions of the Twelfth Amendment.  Johnson also represented Kentucky in the U.S. House of Representatives and Senate; he began and ended his political career in the Kentucky House of Representatives.

John Telemachus Johnson: John Telemachus Johnson (October 5, 1788 – December 17, 1856) was a minister in the Christian Church, an attorney, and a politician, elected as U.S. Representative from Kentucky.  His older brothers, also politicians, included James Johnson and Richard M. Johnson, who served as Vice President under Martin Van Buren; he was the uncle of Robert Ward Johnson, also a politician.

James Johnson (Kentucky): James Johnson (January 1, 1774 – August 13, 1826) was a U.S. Representative from Kentucky, brother of Richard Mentor Johnson and John Telemachus Johnson and uncle of Robert Ward Johnson.

Alben W. Barkley: Alben William Barkley ( ; November 24, 1877 – April 30, 1956) was an American lawyer and politician from Kentucky who served in both houses of Congress and as the 35th Vice President of the United States from 1949 to 1953.  In 1905, he was elected county attorney for McCracken County, Kentucky.  He was chosen County Judge/Executive in 1909 and U.S. Representative from Kentucky's First District in 1912.  As a Representative, he was a liberal Democrat, supporting President Woodrow Wilson's New Freedom domestic agenda and foreign policy.

President pro tempore of the United States Senate: The president pro tempore of the United States Senate ( or ), also president pro tem, is the second-highest-ranking official of the United States Senate.  of the United States Constitution provides that the Vice President of the United States is, despite not being a senator, the President of the Senate, and mandates that the Senate must choose a president "pro tempore" to act in the Vice President's absence.  Unlike the vice president, the president pro tempore is an elected member of the Senate, able to speak or vote on any issue.  Selected by the Senate at large, the president pro tempore has enjoyed many privileges and some limited powers.  During the vice president's absence, the president pro tempore is empowered to preside over Senate sessions.  In practice, neither the vice president nor the president pro tempore usually presides; instead, the duty of presiding officer is rotated among junior senators of the majority party to give them experience in parliamentary procedure.

Johnson County, Iowa: Johnson County is a county located in the U.S. state of Iowa.  As of the 2010 census, the population was 130,882 making it the fifth-most populous county in Iowa.  The county seat is Iowa City, home of the University of Iowa.  The county is named for Richard Mentor Johnson, the ninth vice president of the United States.

Supporting paragraphs: James Johnson (Kentucky) Richard Mentor Johnson
Answer: Richard Mentor Johnson