He was 31 years old when he was enlisted (3, 4 [50 in ?1879]). He was born in Ireland (4).
He was enlisted and mustered into service on 4 November 1861 (1, 3). He was enlisted at Philadelphia, Pennsylvania (3). He was mustered in, at Philadelphia, Pennsylvania, as a private in company I (1, 3).
He was discharged on 31 March 1863 on surgeon's certificate of disability (1 [31 March], 2 [no date], 3). He had served for sixteen months (4).
On 4 October 1879, he was admitted to the National Soldiers Home (4). He had a prolapsed anus, but was not receiving any pension (4).
He died on 8 May 1880, at the Central Branch of the National Soldiers Home (4).
On 30 December 1881, his widow, Susannah McGuckin, successfully applied for a pension (5, 6).
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 consolidated morning report, 91st PA, 30 March 1863 (James McGuckin)
3 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 30 March 2005 (James McGuckin)
4 Annual report of the Board of Managers of the National Soldiers Home, 30 December 1882 [for the fiscal year ending 30 June 1882]. Serial Set volume 2115, session volume 1, 47th Congress, 2nd Session, House Miscellaneous Document 13, page 378 (James McGuckin)
5 pension index, by name (James McGuckin)
6 pension index, by regiment, 91st PA Infantry, company I (James McGuckin)
[I did not find an entry for him in the index on <www.ancestry.com> to the 1890 veteran's census (searched May 2007)]