Franklin Stillwell, aka Frank Stillwell, was a resident of Hempstead on Long Island and enlisted June 1, 1861, in Brooklyn, to serve three years. Mustering in as private in Co. I , June 20, 1861, he re-enlisted as a veteran on December 25, 1863. Stillwell, however was documented as being captured in action, May 6, 1864, at the Battle of the Wilderness and was later reported killed.
This photograph was found in Long Island and the Civil War Queens, Nassau and Suffolk Counties During the War Between the States by Harrison Hunt and Bill Bleyer Arcadia Publishing, 2015. Note the 6th Corps badge.