Mcdowell
IRVIN, an American military officer; born near Columbus, O., Oct. 15, 1818; was aid-de-camp to General Wool in the Mexican War (1845); commanded the Department of Northeastern Virginia and the defenses of Washington (1861), and the Army of the Potomac at the battle of Bull Run; later commanded the Department of the Pacific (1864); of California (1866); of the East (1868); of the South (1872). He died in San Francisco, Cal., May 5, 1885.