Education
Born in Exeter, New Hampshire, Gilman attended Phillips Exeter Academy, Exeter, New Hampshire, and pursued classical studies. He was graduated from Harvard Law School.
Born in Exeter, New Hampshire, Gilman attended Phillips Exeter Academy, Exeter, New Hampshire, and pursued classical studies. He was graduated from Harvard Law School.
He was admitted to the bar in 1850 and commenced practice in Exeter, New Hampshire. He lived in the John Dunlap House, also known as the Gilman Mansion. Gilman was elected as a Republican to the Thirty-fifth Congress (March 4, 1857-March 3, 1859).
He declined to be a candidate for renomination in 1858.
He served as delegate to the Republican National Convention in 1860. He was interested in introducing waterworks and other public improvements.
He died in Brunswick, Maine, on February 5, 1901. He was interred in Pine Grove Cemetery.
He served as member of the New Hampshire House of Representatives in 1851 and 1852. He served as member of the Maine House of Representatives in 1854 and 1855. He served as member of the State Whig committee.