He was born in 1840/41 (4 (21 in 1862), 7 (21 in 1862)). He was born in Philadelphia, Pennsylvania (4, 6, 7).
He was a bonnetboard maker, and was living in Philadelphia, Pennsylvania (4, 7).
When he enlisted, he was 6 feet 0 inches tall, and had a light complexion, gray eyes, and light hair (4, 7 [6'1"]).
He enlisted and was mustered into service on 4 or 14 January 1862 (1 [14 Jan], 4 [4 Jan], 7 [14 Jan]). He was enlisted for three years, at Philadelphia, Pennsylvania, by Captain Fetter (4, 7). He was mustered in as a private in company F at Philadelphia, Pennsylvania (1, 7 [transferred from co.G], 9 (transferred from F to G)).
He fought at the Battle of Gettysburg (8).
He reenlisted as a veteran volunteer on 25 February 1864, at Philadelphia, Pennsylvania (1, 7).
He was killed in action on 18 June 1864 at Petersburg, Virginia (1, 2, 3, 4, 6, 7). He was a private (1 [co.F], 9 [co.G]).
1 Bates, Samuel Penniman. History of Pennsylvania volunteers, 1861-5. Harrisburg: B. Singerly, state printer, 1869-71. 5 volumes. 'Ninety-first regiment', volume 3, pages 186-233. (In the roster) (Henry F Gray)
2 Thomas Walter, 'Personal recollections and experiences of an obscure soldier', Grand Army Scout and Soldiers' Mail volume 3, number 48, page 2 (not named; this may not be about Gray)
3 consolidated morning report, 91st Pennsylvania, 29 June 1864 (Private Gray)
4 company F register of deaths (Henry Gray)
5 company F, descriptive roll, #99 (Henry Francis Gray)
6 company F, second descriptive roll, #19 (Henry F Gray)
7 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 15 January 2005 (Henry F Gray)
8 Pennsylvania Memorial, Gettysburg, Pennsylvania (Henry F Gray)
9 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Henry F Gray)