Scottish ancestor John Hanna served in Revolutionary War

For those of my Ringer relatives pining to join the Sons or Daughters of the American Revolution, this may be your chance!  Ancestor John Issac Hanna (1748-1838) is an authentic American Revolutionary War Soldier.

John Hanna was the father of 

Robert Hanna (1792-1870) who was the father of 

Adeline Hanna (1820-1902) who was the mother of 

Joseph Ringer (1860-1938) who was the father of
George Ringer (1888-1964) who was my grandfather.

John Hanna is buried near the 6th tee at the Black Rock Golf Club in Hagerstown, MD.

John apparently served as a private under Captain John Paxton.  From an unverified source on the internet:

During the Revolutionary War, a battalion was newly raised in the vicinity of his home. John was elected, by ballot, Captain of Company D, 2nd Battalion, York County Militia. Among other engagements, the Battalion participated in the battle of Brandywine and of Germantown. Captain John was severely wounded in the latter battle.   Source:  http://www.uh.edu/~jbutler/gean/captjohnpaxton.html