April 6, 1785, Litchfield, Connecticut.
August 27, 1866, Medford, Massachusetts.
Mt. Auburn Cemetery, Cambridge, Massachusetts.
Pierpont graduated from Yale College (1804), worked as a tutor in New Haven, Connecticut, and Charlestown, South Carolina, then became a lawyer in 1812. Shortly after, he left law and went into business, only to leave it, too, and attend Harvard College to study theology.
In 1819 he became pastor of the Unitarian church in Hollis Street, Boston, Massachusetts. His zeal against drinking and slavery made him resign in 1840. In 1845, he became pastor of a Unitarian congregation in Troy, New York. He went on to another Unitarian pastorate in Medford, Massachusetts (1849–59).
At age 70, he became a chaplain in the American army, and was later appointed a clerk in the Treasury Department in Washington, DC. His works include: