Records in the American CW Research Database, Historical Data Systems, indicate he was discharged before their first major battle at Winchester, May 24, 1862.

Francis Davignon

Residence Medford MA; a 44 year-old Artist.
Enlisted on 5/25/1861 as a Corporal.
On 5/25/1861 he mustered into "I" Co. MA 2nd Infantry
He was discharged for disability on 5/11/1862
(Disch by order of War Dept)
Other Information:
born in 1817
Buried: St. Mary's Cemetery, New London, CT
Gravesite: S52-27

Sources used by Historical Data Systems, Inc.:
- Massachusetts Soldiers, Sailors and Marines in the Civil War
- Sons of Union Veterans: Graves Registration Project