DEARBORN, HENRY (1751-1829). American soldier and secretary of War, was born at Hampton in south-eastern New Hampshire. Upon hearing of the battle of Lexington, he left the practice of medicine to join the provincial forces and served as an officer at the battle of Bunker Hill, Arnold's expedition to Quebec (where he was taken prisoner and exchanged), battle of Saratoga, Valley Forge, battle of Monmouth, Sullivan's expedition against the Indians, and the siege of Yorktown. He kept a detailed jour nal throughout the war, which gives a valuable first-hand account of the principal campaigns of the Revolution. Upon the organiza tion of the Government, President Washington designated him United States marshal for the District of Maine, and in 1792 he was elected to Congress, where he served as a Republican for two terms. He was secretary of War through the administration of President Jefferson, 180I-18o9. In 1803 he issued an order for "erecting barracks and a strong stockade" at "Chikago," "with a view to the establishment of a Post." The important part which this post, Fort Dearborn, played in the early history of Chicago, has given his name a lasting association with that city. In Jan. 1812, President Madison appointed him senior major general of the United States Army. Upon the outbreak of hostilities with England, he undertook to carry out an extensive plan of campaign, including an invasion of Canada at several points. After a long succession of delays and reverses, he was relieved of his command in July 1813. In 1822, President Monroe appointed him minister to Portugal. He died in Roxbury, Mass. (H. D. SM.)