From "Civil War Biographies from the Western Waters" by Myron J. Smith, Jr..
JOHN JULIUS GUTHRIE
(1814, Washington, N.C.-- November 24, 1877, Nags Head, N.C.; CSN)
Appointed a USMA cadet in 1833, but preferring the life of a sailor, Guthrie resigned from West Point and was appointed a midshipman on February 26, 1834. He achieved the rank of lieutenant by the 1850s.
Active at sea, the Mexican War veteran participated in the Allied attack on the Chinese barrier forts at Canton (Second Opium War) in November 1856, where he hauled down the Chinese flag, which he presented to the state of North Carolina in 1858. (I wasn't able to find out if that Chinese flag was still in North Carolina.)
While on patrol off the Congo River in Africa in 1861, he led a boarding party from the USS Saratoga in the capture of the slaver Nightingale, with 900 slaves aboard.
--Old B-Runner