Robert Mcclellan 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 New York

New York

New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

.

Born in Livingston, New York

Livingston, New York

Livingston is a town in Columbia County, New York, United States. The population was 3,424 at the 2000 census. The town is named after its founding father....

, Mcclellan was graduated from Williams College, Williamstown, Massachusetts

Williamstown, Massachusetts

Williamstown is a town in Berkshire County, in the northwest corner of Massachusetts. It shares a border with Vermont to the north and New York to the west. It is part of the Pittsfield, Massachusetts Metropolitan Statistical Area. The population was 7,754 at the 2010 census...

, in 1825.
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...

 and practiced his profession in Middleburgh, New York

Middleburgh, New York

Middleburgh is the name of some settlements in New York, United States:* Middleburgh , New York, in Schoharie County* Middleburgh , New York, also in Schoharie County...

 from 1828 to 1843.

Mcclellan 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 Twenty-fifth

25th United States Congress

-House of Representatives:-Leadership:- Senate :* President: Richard Mentor Johnson * President pro tempore: William R. King - House of Representatives :* Speaker: James K. Polk -Members:This list is arranged by chamber, then by state...

 Congress (March 4, 1837-March 3, 1839).

Mcclellan was elected to the Twenty-seventh

27th United States Congress

The Twenty-seventh 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, 1841 to March 3, 1843, during the one-month...

 Congress (March 4, 1841-March 3, 1843).
He served as chairman of the Committee on Patents (Twenty-seventh Congress).
He died in Greenpoint, Brooklyn, New York, June 28, 1860.
He was interred in Greenwood Cemetery.

Source