He was 32 years old when he was enrolled (4, 5, 12 [32 [?] at death in 1864]). He was born in Ireland (12).
He was a stonemason (4, 5). He was living in Philadelphia when he was enrolled (4).
He was 5 feet 8 inches tall, and had a dark complexion, blue eyes, and dark hair (4, 5).
He was enlisted and mustered into service as a private on 11 December 1861, at Philadelphia, Pennsylvania (1, 3, 4). He was enlisted for three years, by Lieutenant Kayser, at Philadelphia, Pennsylvania (3). He served as a private in company B (1).
On 8 August 1862, John Lentz ordered him placed in the slave pen at Alexandria, Virginia (2, 8). Enoch C Brewster released him on the same day, without authority (2, 8).
He fought at the Battle of Gettysburg (10).
He reenlisted as a veteran volunteer on 24 December 1863, at Bealton, Virginia (1, 4, 5 [25 Dec]). He was enlisted by Lieutenant Carpenter, and mustered by Lieutenant Swan (5).
He was wounded in action on 15 May 1864 (1, 4, 5, 11, 13) by a gunshot wound of the left hand (12). He was absent wounded later that month (13).
He died of those wounds, at West Philadelphia Hospital (also known as Satterlie Hospital), on 13 June 1864 (1, 4, 5, 6, 12 [exhaustion resulting from wounds]). On 15 June 1864, he was buried in Cathedral Cemetery, Philadelphia, Pennsylvania (12).
On 2 September 1864, his widow, Miriam Gallagher, applied successfully for a pension (7, 9).
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) (Patrick Gallagher)
2 general order 27, HQ Military District of Washington, 12 September 1862 (Private Gallagher)
3 company B, descriptive roll, entry 25 (Patrick Gallagher)
4 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 31 May 2004 (Patrick Gallagher)
5 company B, [second] descriptive book, entry 13 (Patrick Gallagher)
6 consolidated morning report, 91st Pennsylvania, 29 June 1864 (Pri Pat. Gallagher)
7 pension index, by regiment (Patrick Gallagher)
8 court-martial record, E Carroll Brewster (Gallagher)
9 pension index, by name (Patrick Gallagher)
10 Pennsylvania Memorial, Gettysburg, Pennsylvania (Pat Gallagher)
11 'The Ninety-first Pennsylvania volunteers', Philadelphia Inquirer 8 June 1864 page 3 (Patrick Gallagher)
12 death certificate, Philadelphia, Pennsylvania, 13 June 1864 (Patrick Gallegher)
13 monthly return, company B, May 1864 (Patrick Gallagher)
[I did not find an entry for him in the Ancestry index to the 1890 veteran's census (searched May 2007)--but widows in Missouri and in Blair County PA had no identifying information]