Born: January 1, 1800, Boston, Massachusetts.
Died: March 21, 1861, Cambridge, Massachusetts.
Buried: Mount Auburn Cemetery, Cambridge, Massachusetts.
Whittemore came from a poor family and had a troubled childhood. He ran away from two apprenticeships, but in 1820 met Hosea Ballou, who took the young man under his wing.
Within a year, Whittemore was ordained, and pastored in Cambridgeport, Massachusetts.
He also edited the Trumpet and Universalist magazine; composed music; wrote books and pamphlets; served in the state legislature; gave temperance lectures; reorganized the bank in Cambridge, Massachusetts; and became president of the Vermont and Massachusetts Railroad in 1849.