Question: Which years did the Richard Mentor Johnson, for whom Johnson Township, Clinton County, Indiana, serve as US Vice President?
Context: 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. The Jersey Shore Area School District is a large rural, public school district in Lycoming County, Pennsylvania and Clinton County, Pennsylvania.  The district encompasses approximately 385 sqmi .  It is centered on the borough of Jersey Shore and serves the surrounding Lycoming County municipalities of Limestone Township, Bastress Township, Nippenose Township, Porter Township, Piatt Township, Anthony Township, Mifflin Township, Watson Township, Cummings Township, McHenry Township, Brown Township, and Salladasburg.  It also encompasses Avis, Pine Creek Township, and Crawford Township in Clinton County.  The District was organized in 1966 by a consolidation of eleven smaller school districts.  Per the 2000 US Census Bureau data, Jersey Shore Area School District served a resident population of 19,807.  According to 2010 state census data, Jersey Shore Area School District served a resident population of 17,858.  The educational attainment levels for the Jersey Shore Area School District population (25 years old and over) were 86.8% high school graduates and 13.7% college graduates.  The District is one of the 500 public school districts of Pennsylvania. Robert McDonald Jones (October 1, 1808 – February 22, 1872) was a member of the Choctaw Nation, Pro-Tempore of the Choctaw Senate, and prominent Confederate politician.  He was born in Mississippi and later relocated to Indian Territory.  He was educated at the Choctaw Academy in Blue Springs, Kentucky, where he received a diploma signed by future Vice President Richard Mentor Johnson. Berlin is an extinct town in Johnson Township, Clinton County, Indiana in the United States.  Platted in 1847 on Indian Prairie near the southeast corner of the township, the town faded during the 19th century and by the early 1900s was "off the map". The Clinton County Courthouse is a historic courthouse located at 50 North Jackson Street in Frankfort, Clinton County, Indiana, United States.  The Clinton County Courthouse dates from 1882-1884.  It was designed by George W. Bunting, who also designed courthouses in Anderson (Madison County) and Franklin (Johnson County).  The Clinton County Courthouse is a three-story, Second Empire style limestone building adorned with statuary and a 165-foot domed central tower with a clock.  The courthouse cost $170,450 to build in 1882.  The courthouse is still in use as the county courthouse. 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. 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. The 1835 Democratic National Convention was a presidential nominating convention that was held from May 20 to May 22, 1835, in Baltimore, Maryland.  This was the second national convention of the Democratic Party of the United States.  The delegates nominated Vice President Martin Van Buren for President and Representative Richard Mentor Johnson of Kentucky for Vice President. Johnson Township is one of fourteen townships in Clinton County, Indiana.  As of the 2010 census, its population was 511 and it contained 209 housing units.  The township was named for Richard M. Johnson, a military officer and later vice president of the United States. Johnson County is a county located in the U.S. state of Kentucky.  As of the 2010 census, the population was 23,356.  Its county seat is Paintsville.  The county was formed in 1843 and named for Richard Mentor Johnson, War of 1812 general, United States Representative, Senator, and Vice President of the United States.  Johnson County is classified as a moist county, which is a county in which alcohol sales are not allowed (a dry county), but containing a "wet" city, in this case Paintsville, where alcoholic beverage sales are allowed.
Answer: 1837 to 1841