He was 44 years old when he was enlisted (3).
He was living in Philadelphia, Pennsylvania, when he was enlisted (3).
He was enlisted and mustered into service on 21 October 1861 (1, 3). He was enlisted at Philadelphia, Pennsylvania (3). He was mustered in as a private, at Philadelphia, Pennsylvania (3). He initially served as a private in company K (1).
He was transferred from company K to company D on 24 December 1861 (1, 3, 5).
He was killed on 3 May 1863 at Chancellorsville, Virginia (1, 2, 3 [missing in action, supposed dead]).
On 21 September 1863, his widow, Ellen Johnson, applied successfully for a pension (6, 7).
In 1890, his widow, Ellen Johnson, was living at 4337 Tacawanna Street, Philadelphia, Pennsylvania (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 consolidated morning report, 91st PA, 7 May 1863 (Joseph Johnson)
3 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 9 August 2004 (Joseph Johnson)
4 1890 US census, veterans schedule, Pennsylvania, Philadelphia, Philadelphia, supervisor's district 1, enumeration district 496, page 1 (image 1093 on <www.ancestry.com>), line 1 (Joseph Johnson)
5 company K, list of men transferred, #6 (Joseph Johnson)
6 pension index, by name (Joseph Johnson)
7 pension index, by regiment (Joseph Johnson)