ELLIS, Theodore Gunville, soldier, born in Boston, Massachusetts, 25 September 1829; died in Hartford, Connecticut, 8 January 1883. He became a civil engineer, was chief engineer of the Sackett's harbor and Saratoga railroad, subsequently had charge of silver mines in 1856'58 in Mexico, and in 1859 became engineer of the Hartford dyke. He entered the Federal army as adjutant of the 14th Connecticut infantry, was engaged at Antietam and Fredericksburg, was promoted major in April 1863, and at the battle of Chancellorsville commanded the regiment. At Gettysburg his regiment was hotly engaged, and captured five battle flags in a bayonet charge.

In September 1863, he became lieutenant colonel, and in October colonel, of the regiment. He was engaged at Mine Run, and in the battle of the Wilderness and the subsequent conflicts commanded a brigade. During the summer of 1864 he commanded the camp at Annapolis, Maryland His regiment had become greatly reduced in numbers by many severe engagements. In the winter of 1864'5 he was a member of a general military court at Washington. He was mustered out on 8 June 1865, with the brevet rank of brigadier general. In 1867 he became surveyor general of Connecticut. He was for several years vice president of the American society of civil engineers. In 1874 he conducted hydraulic experiments with large apertures at Holyoke, Massachusetts. At the time of his death he had charge of the government works on the Connecticut River. He published many important papers on engineering in the " Transactions" of the American society of civil engineers.