Ebenezer Dumont was born in the Ohio River hamlet of Vevay, Switzerland County, Indiana, on November 23, 1814. He was graduated from the University of Indiana, studied law, was admitted to the bar, and began practice in Vevay. In 1838 he served in the legislature and for the following six years was treasurer of his town. Dumont was captain and lieutenant colonel of the 4th Indiana volunteers during the war with Mexico, was again a member of the Indiana house in 1850 and 1853, and was a presidential elector for Franklin Pierce in 1852. He had meantime changed his residence to Indianapolis and here, on April 27, 1861, was again mustered into the service of the United States as colonel of the 7th Indiana Volunteer Infantry, a ninety-day regiment reorganized as a three-year regiment in September. The 7th Infantry fought well at Laurel Hill, Rich Mountain, and Corrick's Ford, in George B. McClellan's West Virginia campaign at the start of the war; Dumont was promoted to brigadier general of volunteers on September 3, 1861, almost immediately after assuming command of his newly mustered regiment. He was in action at Cheat Mountain and on the Greenbrier River against R. E. Lee that fall and the following January commanded the 17th Brigade of the Army of the Ohio. His command repulsed John H. Morgan's cavalry at Lebanon, Kentucky, in May and after September he commanded the 12th Division of D. C. Buell's army during Braxton Bragg's Kentucky invasion. Soon after the battle of Perryville, in which Dumont's division did not participate but remained at Frankfort, a portion of his command was captured at Hartsville, Tennessee by a force under John H. Morgan. He went on sick leave in December and resigned his commission on February 28, 1863, to take his seat in Congress. He served until 1867, not running for a third term. U. S. Grant appointed him governor of the Idaho Territory but Dumont died in Indianapolis on April 16, 1871, before taking the oath of office. He was buried in Crown Hill Cemetery there.
Reference: Generals in Blue. Lives of the Union Commanders by Ezra J. Warner. Louisiana State University Press. Baton Rouge.