William Wirt Warren 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 Massachusetts

Massachusetts

The Commonwealth of Massachusetts is a state in the New England region of the northeastern United States of America. It is bordered by Rhode Island and Connecticut to the south, New York to the west, and Vermont and New Hampshire to the north; at its east lies the Atlantic Ocean. As of the 2010...

.

Born in Brighton (now a part of Boston), Massachusetts, Warren pursued classical studies, and was graduated from Harvard University

Harvard University

Harvard University is a private Ivy League university located in Cambridge, Massachusetts, United States, established in 1636 by the Massachusetts legislature. Harvard is the oldest institution of higher learning in the United States and the first corporation chartered in the country...

 in 1856.
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 commenced practice in 1857.
Assessor of internal revenue in the seventh Massachusetts district in 1865.
He served as delegate to the Democratic National Convention in 1868.
He served as member of the State senate in 1870.

Warren 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 Forty-fourth

44th United States Congress

The Forty-fourth 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, 1875 to March 4, 1877, during the seventh and...

 Congress (March 4, 1875-March 3, 1877).
He was an unsuccessful candidate for reelection in 1876 to the Forty-fifth

45th United States Congress

-House of Representatives:-Leadership:-Senate:*President: William A. Wheeler *President pro tempore: Thomas W. Ferry -House of Representatives:*Speaker: Samuel J. Randall -Members:This list is arranged by chamber, then by state...

 Congress.
He engaged in the practice of law until his death in Boston, Massachusetts, May 2, 1880.
He was interred in Evergreen Cemetery (Boston, Massachusetts).