Chamberlain wrote a series of essays as The Hermit which appeared for a year or more in "The Farmer's Museum" beginning in the summer of 1796. He also was ghost writer for Mrs. Susanna Willard Johnson's "A Narrative of the Captivity of Mrs. Johnson" in 1796. He was a member of the New Hampshire House of Representatives from 1802 to 1804. In 1804, he moved to
Charlestown, New Hampshire becoming partners with Benjamin West until West's death in 1817. Elected as a Federalist to the
Eleventh Congress, Chamberlain served as
United States Representative for the state of
New Hampshire from March 4, 1809, to March 3, 1811. After leaving Congress he resumed the practice of law. He served as a member of the New Hampshire House of Representatives again in 1818. He continued his practice until he moved in 1826 to Utica, New York. Chamberlain was elected a member of the
American Antiquarian Society in 1815. ==Death==