Henry Wilson was a Congregationalist.
From: Political Graveyard website (http://politicalgraveyard.com/bio/wilson4.html#R9M0JHRX3; viewed 29 November 2005):
Wilson, Henry (1812-1875) - also known as Jeremiah Jones Colbaith - of Natick, Middlesex County, Mass. Born in Farmington, Strafford County, N.H., February 16, 1812. Member of Massachusetts state house of representatives, 1841-42; member of Massachusetts state senate, 1844-46, 1850-52; delegate to Whig National Convention from Massachusetts, 1848; candidate for U.S. Representative from Massachusetts, 1852; delegate to Massachusetts state constitutional convention, 1853; candidate for Governor of Massachusetts, 1853; U.S. Senator from Massachusetts, 1855-73; candidate for Republican nomination for Vice President, 1868; Vice President of the United States, 1873-75; died in office 1875. Congregationalist. Died, of a stroke, in the U.S. Capitol Building, Washington, D.C., November 22, 1875. Interment at Old Dell Park Cemetery, Natick, Mass.
Books about Henry Wilson: Richard H. Abbot, Cobbler in Congress: The Life of Henry Wilson 1812-1875