He was born in 1831/32 (2 (29 in 1861)).
He enlisted and was mustered into service on 27 October 1861 (1, 2, 3). He enlisted for three years, at Philadelphia, Pennsylvania (2, 3). He was mustered in as a private, at Philadelphia, Pennsylvania (2). He was a private in company B (1, 4).
The company C descriptive roll has an entry about him, among a group of men transferred from company B to company C, but it is crossed out (3). Perhaps he was supposed to be transferred to company C, but the transfer was cancelled.
He was not on the muster-out roll when the regiment mustered out (1,2). He was a private, in company B (4).
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) (George M Clark)
2 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 27 June 2004 (George M Clark)
3 company C, descriptive roll, entry 94 (George M Clark)
4 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (George M Clark)