He was born in 1832/33 (4 (22 in 1865)). He was born in Cardiff, Wales (4).
When he enlisted, he was a tailor, and was living in Bucks County, Pennsylvania (4).
When he enlisted, he was 5 feet 4-7/8 inches tall, and had a light complexion, grey eyes, and brown hair (4).
He enlisted and was mustered into service on 1 March 1865 (1, 4) or (I suspect) 1 March 1864. He enlisted at Philadelphia, Pennsylvania (4). He was mustered in, at Philadelphia, Pennsylvania, as a private in company I (1, 4, 5).
He deserted on 9 March 1864 or 1865, from Philadelphia, Pennsylvania (1 [1865], 3 [1864], 4 [1865]). He was a private, in company I (5).
He may be the Dempsey whom Sinex asked on 27 April 1864 be sent to the regiment (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)
2 letter, Sinex to Marvin, 27 April 1864
3 company I, register of deserters (Edward Dempsey)
4 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 28 March 2005 (Edward Dempsey)
5 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Edward Dempsey)