; born in Andover, Mass.
. March 25, 1818; graduated at West Point
, first in his class, in 1839, and entered the engineer corps.
He was attached to General Scott
's staff during the war in Mexico
(1847-48) as adjutant, and was severely wounded in the attack on the city of Mexico
He resigned in 1853, and was appointed governor of Washington Territory
and placed in charge of the survey of a route for a North Pacific railway, establishing its practicability.
was a delegate to Congress from Washington Territory
from 1857 till 1861.
A leading Democrat, he was in the convention at Charleston
in 1860, and supported Breckinridge
for the Presidency; but when the secession movements began he advised Buchanan
to dismiss Floyd
, and supported the government nobly with his sword in the Civil War
that ensued, entering the military service as colonel of the 79th New York Highlanders.
He was active under Sherman
in the Port Royal expedition
in 1862; was afterwards attached to Pope
's command, leading a division; and in the battle at Chantilly
fell while bearing aloft the colors of one of his regiments and cheering on his men, Sept. 1, 1862.
He had been promoted major-general of volunteers, July 4, 1862.