Claim: Donald McNeill Fairfax (August 10, 1822-January 10, 1894) was a rear admiral in the United States Navy.
Evidence: (1822-08-10)August 10, 1822
Mount Eagle, Fairfax County, Virginia January 10, 1894(1894-01-10) (aged 75)
Hagerstown, Maryland United States Navy Rear admiral 
Donald MacNeil Fairfax (March 10, 1818 – January 10, 1894) was an officer in the United States Navy during the American Civil War. Fairfax was later promoted to flag rank, retiring as a Rear Admiral on September 30, 1881.