He was 40 years old when he was enrolled (3, 6 [50 at death in 1862]). He was born in Philadelphia (6).
He was living in Philadelphia, Pennsylvania, when he was enrolled (3).
He was enrolled and mustered into service on 12 November 1861 (1, 3). He was enrolled at Philadelphia, Pennsylvania (3). He was mustered in as a private, at Philadelphia, Pennsylvania (3). He served as a private in company B (1).
He was killed accidentally, at Alexandria Virginia, on 4 July 1862, by a fall, while he was in confinement (1, 2, 3). He fell from a window in the hospital (6 [5 July 1862]). On 9 July 1862, he was buried in Laurel Hill Cemetery, Philadelphia, Pennsylvania (6).
On 23 August 1862, Elizabeth Vaughn, his widow, unsuccessfully applied for a pension (4, 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) (Benjamin Vaughen)
2 company B Register of deaths (Benjamin Vaughn)
3 Civil War Veterans' Card File, available at the Pennsylvania State Archives, searched 29 June 2004 (Benjamin Vaughen)
4 pension index, by regiment (Benjamin Vaughn)
5 pension index, by name (Benjamin Vaughn)
6 death certificate, Philadelphia, Pennsylvania, 5 July 1862 (Benj Vaughn)
[I did not find an entry for him in Ancestry's index to the 1890 veterans' census (searched 5 June 2009)]