Lewis Winans Ross was a U.S. Representative

United States House of Representatives

The United States House of Representatives is one of the two Houses of the United States Congress, the bicameral legislature which also includes the Senate.The composition and powers of the House are established in Article One of the Constitution...

 from Illinois

Illinois

Illinois is the fifth-most populous state of the United States of America, and is often noted for being a microcosm of the entire country. With Chicago in the northeast, small industrial cities and great agricultural productivity in central and northern Illinois, and natural resources like coal,...

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Born near Seneca Falls, New York

Seneca Falls (village), New York

Seneca Falls is a village in Seneca County, New York, United States. The population was 6,861 at the 2000 census. The village is in the Town of Seneca Falls, east of Geneva, New York. On March 16, 2010, village residents voted to dissolve the village, a move that would take effect at the end of 2011...

, Ross moved to Illinois and settled in Lewistown.
He completed preparatory studies and attended Illinois College at Jacksonville in 1837.
He studied law.
He was admitted to the bar

Admission to the bar in the United States

In the United States, admission to the bar is the granting of permission by a particular court system to a lawyer to practice law in that system. Each U.S. state and similar jurisdiction has its own court system and sets its own rules for bar admission , which can lead to different admission...

 in 1839 and commenced practice in Lewistown, Illinois

Lewistown, Illinois

Lewistown is a city in Fulton County, Illinois, United States. The population was 2,522 at the 2000 census. It is the county seat of Fulton County. Located in central Illinois, it is southwest of Peoria. It is the source of Spoon River Anthology by Edgar Lee Masters, who lived there...

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He served as member of the State house of representatives in 1840, 1841, 1844, and 1845.
He served as member of the State constitutional conventions in 1861 and 1870.

Ross was elected as a Democrat

Democratic Party (United States)

The Democratic Party is one of two major contemporary political parties in the United States, along with the Republican Party. The party's socially liberal and progressive platform is largely considered center-left in the U.S. political spectrum. The party has the lengthiest record of continuous...

 to the Thirty-eighth

38th United States Congress

-House of Representatives:Before this Congress, the 1860 United States Census and resulting reapportionment changed the size of the House to 241 members...

, Thirty-ninth

39th United States Congress

The Thirty-ninth United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1865 to March 4, 1867, during the first month of...

, and Fortieth

40th United States Congress

The Fortieth United States Congress was a meeting of the legislative branch of the United States federal government, consisting of the United States Senate and the United States House of Representatives. It met in Washington, D.C. from March 4, 1867 to March 4, 1869, during the third and fourth...

 Congresses (March 4, 1863-March 3, 1869).
He was not a candidate for renomination in 1868.
He resumed the practice of law.
He died in Lewistown, Illinois

Lewistown, Illinois

Lewistown is a city in Fulton County, Illinois, United States. The population was 2,522 at the 2000 census. It is the county seat of Fulton County. Located in central Illinois, it is southwest of Peoria. It is the source of Spoon River Anthology by Edgar Lee Masters, who lived there...

, October 20, 1895.
He was interred in Oak Hill Cemetery.