Rank and organization: Seaman, U.S. Navy. Born: 1833, Denmark. Accredited
to: New York. G.O. No.: 45, 31 December 1864.
Citation: On board the U.S.S.
Brooklyn during action against rebel forts and gunboats and with the ram
Tennessee, in Mobile Bay, 5 August 1864. Despite severe damage to his ship
and the loss of several men on board as enemy fire raked her decks from
stem to stern, Irwin fought his gun with skill and courage throughout the
furious battle which resulted in the surrender of the prize rebel ram Tennessee
and in the damaging and destruction of batteries at Fort Morgan.
This data was extracted from the Committee on Veterans' Affairs, U.S. Senate, Medal of Honor Recipients: 1863-1973 (Washington, D.C.: Government Printing Office, 1973)