He was born in 1833/34 (2 (27 in 1861)).
When he enlisted, he was 5 feet 6 inches tall, and had a fair complexion, blue eyes, and black hair (2).
He enlisted and was mustered into service on 21 October 1861 (1, 2). He was enlisted at Philadelphia, Pennsylvania (2). He was mustered in, at Philadelphia, Pennsylvania, as a private in company I (1, 2, 3, 4, 5).
He deserted on 8 June 1862, from Alexandria, Virginia (1, 2). He was a private, in company I (3, 4, 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) (Fred'k Heilman)
2 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 29 March 2005 (Fred'k Heilman [rolls have 'Frederick'])
3 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Frederick Heileman)
4 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Frederick Heilman)
5 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Frederick Heilerman)