James A. Greer
James Agustin Greer was a rear admiral in the United States Navy, who served during the Civil War.
Greer was born in Cincinnati, Ohio. He enlisted into the Navy onJanuary 1848, joining the sloop Saratoga as a midshipman. He entered the United States Naval Academy in 1853, and graduated as a passed midshipman the following year. After participating in the Paraguay Expedition, he cruised the west African coast until the outbreak of the Civil War.
Source: Wikipedia