He was born in Philadelphia, Pennsylvania (2, 5). He was 18 years old when he was enlisted (2, 5 [25 in ? 1871]).
He was 5 feet 7 inches tall, and had a dark complexion, dark eyes, and dark hair (2).
He was enlisted and mustered into service on 21 or 22 November 1861 (1, 2 [22 Nov]). He was enlisted for three years, at Philadelphia, Pennsylvania, by C L Zinn (2). He was mustered in as a private in company K (1, 5 [H]).
He was transferred to company H on 24 December 1861 (1, 3).
He was discharged on 10 July 1862 on surgeon's certificate of disability (1, 3). He had served for nine months (5).
On 13 August 1871, he was admitted to the National Soldiers Home (5). He had a hernia (5). He was not receiving a pension (5).
On 31 March 1875, he was discharged from the Eastern Branch of the National Soldiers Home (5).
In 1875, he was readmitted to the Eastern Branch (in Maine) of the National Home for Disabled Volunteer Soldiers, on one condition: that he do whatever work the governor ordered without pay for two months (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) (John McClarren)
2 company H, descriptive roll, #77 (John McClarren)
3 company K, list of men transferred, #8 (John McClarren)
4 Annual report of the board of managers of the National Home for Disabled Volunteer Soldiers for 1875. March 21, 1876. Serial Set volume 1702, session volume 5, 44th Congress 1st session, House Miscellaneous Document 147] (John McClarren)
5 Annual report of the Board of Managers of the National Soldiers Home, 30 December 1882 [for the fiscal year ending 30 June 1882]. Serial Set volume 2115, session volume 1, 47th Congress, 2nd Session, House Miscellaneous Document 13, page 378 (John McClarnen [sic])
[I did not find an entry for him in the index on <www.ancestry.com> to the pension index by name (searched April 2006)]
[The only entry I found in the 1890 veterans' census that could be him was someone living in the Falls of Schuylkill, Philadelphia, Pennsylvania; the entry had no identifying information (searched April 2006)]
The following soldiers, heretofore discharged, were, for sufficient reasons, re-admitted unconditionally: [...]
And the following, on conditions that they do such work or duty as the governor shall direct, for the period of two months, without pay: [...] John McClarren, late Company H, Ninety-first Pennsylvania Volunteers.