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Mason Weare Tappan (October 20, 1817 – October 25, 1886) was a New Hampshire state representative, a U.S. Congressman from 1855 to 1861, a colonel during the American Civil War and the New Hampshire Attorney General.

Mason Weare Tappan
Mason Weare Tappan.png
Member of the U.S. House of Representatives
from New Hampshire's 2nd district
In office
March 4, 1855 – March 3, 1861
Preceded byGeorge W. Morrison
Succeeded byEdward H. Rollins
Member of the New Hampshire House of Representatives
In office
Personal details
Political partyKnow Nothing
Other political
Military service
Allegiance United States
Branch/serviceUnited States Union Army
Years of service1861
RankUnion Army colonel rank insignia.png Colonel
CommandsNew Hampshire 1st New Hampshire Infantry
Battles/warsAmerican Civil War

He was born in Newport, New Hampshire, and grew up in Bradford. He attended private schools and the Hopkinton and Meriden academies. He studied law and was admitted to the bar in 1841 and commenced practice in Bradford.

Tappan served in the New Hampshire House of Representatives 1853-1855. He was elected as an American Party candidate to the Thirty-fourth Congress and reelected as a Republican to the Thirty-fifth and Thirty-sixth Congresses (March 4, 1855 – March 3, 1861). While in Congress, he served as chairman, Committee on Claims (Thirty-sixth Congress). He was not a candidate for renomination in 1860.

During the Civil War, he served as colonel of the 1st New Hampshire Infantry, a three-months regiment raised in 1861 in response to President Abraham Lincoln's call to arms. He mustered out in August 1861.

Tappan died in office as the New Hampshire Attorney General at the age of 69. He is buried in Pleasant Hill Cemetery, Bradford, New Hampshire.


  • United States Congress. "Mason Tappan (id: T000040)". Biographical Directory of the United States Congress.
U.S. House of Representatives
Preceded by
George W. Morrison
Member of the U.S. House of Representatives
from New Hampshire's 2nd congressional district

March 4, 1855 – March 4, 1861
Succeeded by
Edward H. Rollins
Legal offices
Preceded by
Lewis W. Clark
New Hampshire Attorney General
Succeeded by
Daniel Barnard