Henry Wilson
Henry Wilson (born Jeremiah Jones Colbath; February 16, 1812 – November 22, 1875) was the 18th Vice President of the United States (1873–75) and a Senator from Massachusetts (1855–73). Before and during the American Civil War, he was a leading Republican, and a strong opponent of slavery. He devoted his energies to the destruction of the "Slave Power" – the faction of slave owners and their political allies which anti-slavery Americans saw as dominating the country.
Originally a Whig, Wilson was a founder of the Free Soil Party in 1848, and served as the party chairman during the 1852 presidential election. He worked diligently to build an anti-slavery coalition, which came to include the Free Soil Party, anti-slavery Democrats, New York Barnburners, the Liberty Party, anti-slavery members of the Native American Party (Know Nothings), and anti-slavery Whigs (called Conscience Whigs). When the Free Soil party dissolved in the mid-1850s, Wilson joined the Republican Party, which he helped found, and which was organized largely in line with the anti-slavery coalition he had nurtured in the 1840s and 1850s.