Jesse B. Thomas
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Jesse Burgess Thomas
|United States Senator|
December 3, 1818 – March 3, 1829
|Succeeded by||John McLean|
|Delegate to the U.S. House of Representatives from Indiana Territory's at-large congressional district|
October 22, 1808 – March 3, 1809
|Preceded by||Benjamin Parke|
|Succeeded by||Jonathan Jennings|
|Delegate and Speaker of the Indiana Territorial House of Representatives|
|Died||May 2, 1853 (aged 75–76)|
Mount Vernon, Ohio
|Political party||National Republican|
Jesse Burgess Thomas (1777 – May 2, 1853) was an American lawyer, judge and politician who served as a delegate from the Indiana Territory to the tenth Congress and later served as president of the Constitutional Convention which led to Illinois being admitted to the Union. He became one of Illinois' first two Senators, and is best known as the author of the Missouri Compromise of 1820, although after his retirement from the U.S. Senate in 1829 he lived the rest of his life in Ohio.
Early and family life
Thomas was probably born in Shepherdstown, Virginia (now West Virginia), in part according to his 1850 census entry, although Appleton's Cyclopedia stated he was born somewhat east on what became the National Road in Hagerstown, Maryland (as was his slightly elder brother) and that he was descended from Lord Baltimore. His family moved to Kentucky when Jesse was an infant. He married Rebecca McKenzie (1776-1851) of New York, but they had no children who survived.
Thomas studied law with his elder brother Richard Symmes Thomas (1772-1828) in Bracken County, Kentucky along the Ohio River, then moved to nearby Mason County, Kentucky, where he served as the county clerk until 1803. He then moved north of the Ohio River to Lawrenceburg in Indiana Territory, where he continued to practice law and became the territorial deputy attorney general in 1805. In the same year, he began serving as a delegate to the Territorial House of Representatives, and fellow delegates chose him as their speaker from 1805 to 1808.
When Benjamin Parke resigned as the territorial delegate to Congress, Thomas was appointed to fill the vacancy from October 22, 1808 until March 3, 1809 when Thomas moved westward to the new Illinois Territory as discussed below. Jonathan Jennings succeeded him as Indiana's territorial delegate and would later become the new state of Indiana's first U.S. representative and later Indiana's Governor.
Thomas moved westward to Kaskaskia, Illinois on the Mississippi River (which made it flood-prone and ultimately transformed it into an island), then Cahokia and later Edwardsville in Madison County, Illinois, where Thomas would later train his nephew, somewhat confusingly named Jesse B. Thomas, Jr., who would have a distinguished career as an Illinois lawyer and judge.
When Illinois became a territory in 1809, President James Madison (with the consent of the U.S. Senate) appointed Thomas judge of the United States court for the northwestern judicial district. Thomas exercised those duties from 1809 until 1818. Voters from St. Clair County (the oldest county in Illinois and with Cahokia as its major town) elected Thomas as Democratic-Republican to the Illinois State Constitutional Convention in 1818. Fellow delegates elected him to preside over the convention, which chose not to accept slavery in the new state. Upon the new state's admittance to the Union, fellow legislators elected Thomas to the U.S. Senate, in which he would serve for two terms (from 1818 until his retirement in 1829). In 1820, Thomas proposed the Missouri Compromise to limit slavery above the southern border of Missouri. In 1823 he switched parties and became a Crawford Republican. He served as chairman on the Committee on Public Lands in the 16th and 18th Congresses. He refused the nomination for a third term and moved to Mount Vernon, Ohio in 1829, where he lived the rest of his life. 
Death and legacy
About two years after the death of his wife, Thomas committed suicide on May 2, 1853, having lived more than seven decades. He is buried in Mound View Cemetery. Thomas's nephew, Jesse B. Thomas, Jr. (1806-1850), son of his brother Richard Symmes Thomas, served as Illinois Attorney General and on the Illinois Supreme Court.
- United States Congress. "Jesse B. Thomas (id: T000171)". Biographical Directory of the United States Congress.
|U.S. House of Representatives|
| Delegate to the U.S. House of Representatives
from Indiana Territory
October 22, 1808 – March 3, 1809
| U.S. Senator (Class 3) from Illinois
Served alongside: Ninian Edwards, John McLean, Elias Kane