He was born in 1832/33 (2 (28 in 1861)). He was born in Philadelphia, Pennsylvania (2).
When he enlisted, he was 5 feet 7-1/2 inches tall, and had a fair complexion, blue eyes, and brown hair (2). He had marks from small pox (2).
He enlisted and was mustered into service on 2 September 1861 (1, 2, 3). He was enlisted for three years, at Philadelphia, Pennsylvania, by Captain Starr (2, 3). He was a private in company C (1, 5, 7).
On 19 October 1893, his father, Edward M Johnson, successfully applied from Pennsylvania for a pension (4, 6).
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) (John P Johnson)
2 company C, descriptive roll, entry 45 (John P Johnson)
3 company C, untitled list, probably of status at muster out, entry 94 (John P Johnston)
4 pension index, by regiment (John P Johnson)
5 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (John P Johnston)
6 pension index, by name (John P Johnson)
7 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (John P Johnson)