He was born in 1842/43 (2 (21 in 1864)). He was born in Philadelphia, Pennsylvania (2).
When he enlisted, he was a machinist, and was living in Philadelphia, Pennsylvania (2).
When he enlisted, he was 5 feet 3 inches tall, and had a light complexion, blue eyes, and light hair (2).
He enlisted and was mustered into service, at Philadelphia, Pennsylvania, on 2 September 1864 (1, 2, 3 [1 Sep]). He was mustered in as a private, in company E (1, 2, 5).
He was discharged on 2 April 1865 (3). He was not on the muster-out roll when the regiment mustered out (1). He was a private (5).
In 1890, he was living at 2229 Clayton Street, Philadelphia, Pennsylvania (3, 4). He was a weaver (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)
2 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 18 August 2004 (William Moore)
3 1890 US census, veterans schedule, Pennsylvania, Philadelphia, Philadelphia, supervisor's district 1, enumeration district 290 (image 1618 on Ancestry), line 7 (William M Moore alias William Moore [sic])
4 1890 Gopsill's Philadelphia directory (William M Moore)
5 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (William Moore)