SEYMOUR, Truman, soldier, born in Burlington, Vermont, 25 September, 1824. His grandfather was first cousin to Moses, noticed above. He was graduated at the United States military academy in 1846, assigned to the 1st artillery, and in the war with Mexico won the brevet of 1st lieutenant for gallantry at Cerro Gordo, and that of captain for Contreras and Churubusco. He was promoted 1st lieutenant, 26 August, 1847, and in 1850-'3 was assistant professor of drawing at West Point. He served against the Seminoles in Florida in 1856-'8, was made captain, 22 November, 1860, and took part in the defence of Fort Sumter in 1861, for which he received the brevet of major. He commanded the 5th artillery and the United States camp of instruction at. Harrisburg, Pennsylvania, from December, 1861, till March, 1862, and was then chief of artillery of General George A. McCall's division till 28 April, 1862, when he was commissioned brigadier-general of volunteers. He served in the various campaigns in Virginia and Maryland in 1862, commanding the left wing at Mechanicsville, 26 June, leading a division at Malvern Hill, 1 July, and gaining the brevets of lieutenant-colonel and colonel for South Mountain and Antietam respectively. After 18 November, 1862, he was in the Department of the South, serving as chief of staff to the commanding general from 8 January till 23 April, 1863, leading a division on Folly island, South Carolina, on 4 July, taking part in the attack on Morris island on 10 July, and commanding the unsuccessful assault on Fort Wagner on 18 July, when he was severely wounded. He was in charge of an expedition to Florida in February, 1864, and took possession of Jacksonville on 7 February He left that town with 5,000 men on the 18th, and on the 20th met the enemy under General Joseph Finegan near Olustee. After a three-hours' battle, General Seymour was forced to retire to Jacksonville. He returned to Virginia after commanding the district of Florida till 28 March, 1864, led a brigade in the 6th corps of tile Army of the Potomac, and was taken prisoner in the battle of the Wilderness, 6 May, 1864. After being taken to Charleston, South Carolina, where he was exposed, by order of General Samuel Jones, to the fire of the National batteries on Morris island, he was exchanged on 9 August, and led a division in the Shenandoah valley and the Richmond campaign, being engaged in the assault on the Confederate picket-lines at Petersburg, on 26 March, 1865, and the general attack of 2 April, which ended the siege of that place. He was brevetted major-general of volunteers "for ability and energy in handling his division, and for gallantry and valuable services in action," and brigadier-general, United States army, for gallantry at the capture of Petersburg, both commissions to date from 13 March, 1865. He was present at Lee's surrender, was mustered out of volunteer service, 24 August, 1865, and became major of the 5th artillery, 13 August, 1866. After the war he commanded forts in Florida, Fort Warren, Massachusetts, in 1869-'70, and Fort Preble, Maine, in 1870-'5, and on 1 November, 1876, he was retired from active service. Since his retirement he has resided in Europe, chiefly in Florence. Williams college gave him the degree of A. M. in 1865.