He was 37 years old when he enlisted (2, 4). He was born in Armstrong County, Pennsylvania (2).
He was a farmer (2).
He was 5 feet 10 inches tall, and had a fair complexion, blue eyes, and auburn hair (2).
He was drafted (1). He enlisted and was mustered into service as a private for one year, on 21 September 1864, at Alleghany County, Pennsylvania (1, 2, 4, 5). He was enlisted and mustered into service by Captain Kecker [?] (2). He served as a private in company E (1).
He seems not to have reached the 91st until March 1865 (based on 2); I do not know why.
He was discharged by War Department general order, at Camp Cadwalader, Philadelphia, Pennsylvania, on 1 June 1865 (1, 3, 4, 5 [30 May]).
On 9 August 1890, he applied successfully for a pension (5).
On 14 March 1907, he again applied for a pension (5).
He died in 1909 (5).
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 company E descriptive roll, entry 186 (John Weiser)
3 company E, register of men discharged, number 47 (John Wiser)
4 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 17 May 2004 (John Weiser; rolls have 'Wiser')
5 pension index, by regiment, 91st PA Infantry, company E (John Wiser [sic])
[I did not find an entry for him in the index on <www.ancestry.com> to the pension index by name (searched April 2007)]