Lyman moved to
Springfield, Massachusetts in 1784, was elected a member of the
Massachusetts House of Representatives, and served in the
Massachusetts State Senate. He was a justice of the court of common pleas of
Hampshire County, and was elected as a
Federalist to the Fourth, Fifth, and Sixth Congresses and served from March 4, 1795, until November 6, 1800, when he resigned. He was previously a candidate for the
4th congressional district in 1788; the election took 5 ballots, and Lyman led on the 2nd and 3rd before losing on the final two to
Theodore Sedgwick. Lyman sought a rematch in 1790, but lost by a much wider margin. Before his successful election in 1794, he ran once more in 1792 for two of the four seats in
Massachusetts's 2nd congressional district: in the at-large seat, he lost to
Dwight Foster, and in the Hampshire County seat, he lost to
William Lyman (no relation). He died in Springfield on June 5, 1802. His interment was in Goshen, Connecticut. ==Other Family==