He was born in 1832/33 (4 (28 in 1861)).
He enlisted and was mustered into service, at Philadelphia, Pennsylvania, on 30 September 1861 (1, 4). He was mustered in as a private, in company D (1, 4, 5).
He may have been declared a deserter on 27 February 1863 (2).
On 3 November 1863, he may have been reported regained from desertion and under arrest (3).
He was not on the muster-out roll (1, 4). He was a private, in company D (5).
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 Stewart)
2 consolidated morning report, 91st PA, 27 February 1863 (Private Stewart; this could be Robert Stewart)
3 consolidated morning report, 91st PA, 3 November 1863 (Priv Steward; this could be Robert Stewart)
4 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 10 August 2004 (George Stewart)
5 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (George Stewart)