Lewis Beach 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 New York City, Beach was graduated from the Yale Law School in 1856.
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...

 the same year and commenced practice in New York.
Took up residence in Orange County, New York

Orange County, New York

Orange County is a county located in the U.S. state of New York. It is part of the Poughkeepsie–Newburgh–Middletown, NY Metropolitan Statistical Area and is located at the northern reaches of the New York metropolitan area. The county sits in the state's scenic Mid-Hudson Region of the Hudson Valley...

, in 1861.
He served as member and treasurer of the Democratic State central committee 1877-1879.

Beach 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-seventh

47th United States Congress

The Forty-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, 1881 to March 4, 1883, during the administration...

, Forty-eighth

48th United States Congress

The Forty-eighth 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, 1883 to March 4, 1885, during the last two years...

, and Forty-ninth

49th United States Congress

The Forty-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, 1885 to March 4, 1887, during the first two years...

 Congresses and served from March 4, 1881, until his death at his home, "Knoll View," Cornwall, Orange County, New York

Orange County, New York

Orange County is a county located in the U.S. state of New York. It is part of the Poughkeepsie–Newburgh–Middletown, NY Metropolitan Statistical Area and is located at the northern reaches of the New York metropolitan area. The county sits in the state's scenic Mid-Hudson Region of the Hudson Valley...

, August 10, 1886.
He served as chairman of the Committee on Expenditures on Public Buildings (Forty-ninth Congress).
He was interred in Greenwood Cemetery, Brooklyn, New York.