He was 22 years old when he enlisted, and had been born in Philadelphia Pennsylvania (2). He was a butcher (2).
He was 5 feet 9 inches tall, had a dark complexion, blue eyes, and dark hair (2).
He served in company H of the 17th Pennsylvania Infantry (5, 6, 7, 8). The company mustered in on 25 April 1861 at Philadelphia (6 [20 Apr 61], 7). The regiment was mustered out of service on 2 August 1861, at Philadelphia (7).
He enlisted and was mustered into service in company E on 21 August 1861 (1, 6, 8). He was enlisted by Captain Lentz, for 3 years (2). He was mustered in by Colonel Reiff (2). He was appointed sergeant on 10 September 1861 (3).
(According to the list of corporals in (3) (Francis O Dell's entry), Elliott was reduced [to the ranks]. Since none of the other sources say that, I'm inclined not to trust it.)
He was discharged on 28 November 1862 on surgeon's certificate of disability, at a camp near Falmouth, Virginia (1, 2, 3, 4, 8 [27 Nov]).
He applied successfully for a pension on 17 December 1870 (5, 8).
In 1890, he was living in Monroe Township, Gloucester County, New Jersey (post office Williamstown) (6). He was ruptured and crushed at [illegible] (6).
On 3 April 1907, he again applied for a pension (8).
He died on 13 May 1919, at Camden, New Jersey (8).
His widow, Mary A Elliott, applied successfully from New Jersey for a pension on 26 June 1919 (5, 8).
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)
2 company E, descriptive roll, number 4 (Henry Elliott)
3 list of non-commissioned officers, company E
4 company E, register of men discharged, number 13 (Henry Elliott)
5 Veterans' administration. Pension index, by name (Henry Elliott)
6 1890 US census, veterans' schedule, New Jersey, Gloucester County, Monroe Township, supervisor's district 3, enumeration district 72, page 1 (Henry Elliott)
7 Bates (see #1), p.166 (17th PA Infantry) (Henry Elliott)
8 pension index, by regiment, 91st PA Infantry, company E (Henry Elliott)