He was 43 years old when he was enlisted (2).
He was enlisted and mustered into service on 9 October 1861 (1, 2 [9 Nov]). He was enlisted at Philadelphia, Pennsylvania (2). He was mustered in as a private, at Philadelphia, Pennsylvania (2). He served as a private in company F (1).
He was transferred on 4 December 1861 to company D (1, 2, 3).
He was discharged on 10 April 1862 on surgeon's certificate of disability (1, 2).
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) (John McGahagan)
2 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 10 August 2004 (John McGahagan)
3 company F, register of men transferred (John McGahagan)
[I did not find an entry for him in the index on <www.ancestry.com> to the pension index by name (searched December 2006)]