He was born in 1817/18 (2 (43 in 1861)).
He enlisted and was mustered into service, at Philadelphia, Pennsylvania, on 25 November 1861 (1, 2). He was mustered in as a private in company I (1, 2, 3).
He was discharged on 2 September 1862 on surgeon's certificate of disability (1 [2 Sep], 2 [12 Sep]). He was a private, in company I (3).
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) (Edward McGowen)
2 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 30 March 2005 (Edward McGowen; rolls have 'McGovern'])
3 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Edward McCowen)