Fisher was born in Milford, Sussex County, Del., October 13, 1817; attended the public schools of Kent County and Mount St. Mary’s College, Emmitsburg, Md.; was graduated from Dickinson College, Carlisle, Pa., in 1838; studied law; was admitted to the bar in 1841 and commenced practice in Dover, Del.; member of the State house of representatives in 1843 and 1844; secretary of state in 1846; confidential clerk to Secretary Clayton in the Department of State at Washington in 1849; appointed by President Taylor a commissioner to adjudicate claims against Brazil, and served from 1850 to 1852; attorney general of Delaware 1857-1860; elected as a Unionist to the Thirty-seventh Congress (March 4, 1861-March 3, 1863); unsuccessful candidate for reelection in 1862 to the Thirty-eighth Congress; appointed by President Lincoln on March 11, 1863, a judge of the Supreme Court of the District of Columbia, which position he resigned when appointed district attorney for the District of Columbia, serving until 1875; returned to Dover; appointed by President Harrison on May 31, 1889, First Auditor of the Treasury Department and served until March 23, 1893; died in Washington, D.C., February 10, 1899; interment in Oak Hill Cemetery; reinterment in the Methodist Cemetery, Dover, Del.