He was 19 years old when he was enlisted (6). He was born in Chester County, Pennsylvania (6).
He was a student (6).
He was 5 feet 8-1/2 inches tall, and had a light complexion, grey eyes, and light hair (6)
He was enlisted and mustered into service on 27 January 1864 (1, 6). He was enlisted for three years, at Philadelphia, Pennsylvania, by Lieutenant Shipley (6). He was mustered in by Lieutenant Burke (6). He served in company D (1).
On 2 March 1864, Colonel Gregory detached him for duty with the recruiting service in Chester, Pennsylvania (2, 4). He may be one of the people whom Sinex asked on 27 April 1864 be returned to the regiment (3).
On 3 July 1865, he was promoted to corporal, effective 1 July 1865 (1, 5).
He mustered out on 10 July 1865 with his company (1).
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 letter, Sinex to Marvin, 7 March 1864
3 letter, Sinex to Marvin, 27 April 1864 [uncertain; the name is almost illegible]
4 special order 14, HQ 91st PA, 2 March 1864
5 special order 39, HQ 91st PA, 3 July 1865 (Preston H Hoops)
6 company D, second descriptive roll, entry 36 (Preston H Hoopes)
[Could he be the Preston H Hoopes (25, law student, born PA) living in ward 15 Philadelphia, Pennsylvania with George and Debrah G Hoopes in 1860? (See the 1860 census, Pennsylvania, Philadelphia, ward 15, district 44, page 477 = 97 handwritten, image 381 of 2294 on the LDS pilot site (accessed 24 Dec 2009)?
[I did not find an entry for him in Ancestry's index to the pension index by name (searched March 2007)]
[I did not find an entry for him in Ancestry's index to the 1890 veterans' census (searched March 2007)]