THOMPSON, Thomas W., senator, born in Boston, Massachusetts, 15 March, 1766; died in Concord, New Hampshire, 1 October, 1821. He was graduated at Harvard in 1786, studied law, was admitted to the bar, and practised in Salisbury from 1790 till 1810, when he removed to Concord. He was a member of the state house of representatives, and its speaker in 1813-'14, served in congress in 1805-'7, and was treasurer of his state in 1809. He was appointed United States senator to fill the unexpired term of Nicholas Gilman, deceased, and served from 19 September, 1814, till 3 March, 1817.--His grandson, John-Leverett, soldier, born in Plymouth, New Hampshire, 2 February, 1835; died in Chicago, Illinois, 31 January, 1888, was the son of William C. Thompson. He studied at Dartmouth and Williams, and read law in Worcester, Massachusetts, and Poughkeepsie, New York, and then at Harvard law-school, where he was graduated in 1858. He was admitted to the bar at Worcester, and continued his studies in Berlin, Munich, and Paris. In 1860 he settled in Chicago, and at the opening of the civil war enlisted as a private of artillery. He rose to be corporal, and was made lieutenant in the 1st Rhode Island cavalry, in which he was commissioned captain, 3 December, 1861; major, 3 July, 1862 ; lieutenant-colonel on 11 July; and colonel on 4 January, 1863. In March, 1864, he took command of the 1st New Hampshire cavalry. He served first with the Army of the Potomac, and in 1864 with Sheridan in the Shenandoah valley, taking part in many engagements, and at the close of the war received the brevet of brigadier-general of volunteers. In 1866 he formed a law-partnership with Norman Williams. General Thompson was connected with the work of the Citizens' association, and was president of the Union league club of Chicago.