(August 27, 1809 — July 4, 1891) Hamlin was a farmer, surveyor, compositor, teacher, lawyer, and politician. Hannibal Hamlin was born in Oxford County, Maine, where he completed his education at Hebron Academy and worked on his family farm. Hamlin was admitted to the bar in 1833 and practiced law in Penobscot County, Maine until 1848. He served as a member of the State House of Representatives from 1836 to 1841, and in 1847. He was elected as a Democrat to the United States Senate and served from March 4, 1843 to March 3, 1847. He was again elected to the United States Senate, by the anti-slavery wing of the Democratic Party, and served again from June 1848 to January 7, 1857. His third time elected as Senator, he was elected as a Republican and served from March 4, 1857 to January 17, 1861, when he resigned because he was elected as Vice President of the United States. Hamlin’s Vice Presidency lasted from 1861 to 1865. After he served as Vice President, Hamlin was once again elected to the Senate and served from March 4, 1869 to March 3, 1881.
[Source: “Biographical Directory of the United States Congress, 1774 - Present,” available at https://bioguide.congress.gov/search/bio/H000121]