He was 21 years old when he was enlisted (3). He was born in New York (3).
He was living in Easthampton when he was enlisted in the 27th Massachusetts (4).
He was a teacher when he was enlisted (4 [sic!]). He was a farmer when he was enlisted (3).
He was 5 feet 5-1/2 inches tall, and had a sandy complexion, blue eyes, and sandy hair (3).
He was enlisted on 14 September 1861 (4). He was mustered into service on 20 September 1861 (1, 3, 4). He was enlisted for three years, at East Hampton, Massachusetts, by Captain Vance (3). He was mustered into the 27th Massachusetts Volunteers, in company A (3).
He was transferred to the 91st Pennsylvania, by order (3). He served as a private in company G (1).
He was transferred on 21 or 25 June 1862 to "his own" 27th Massachusetts Volunteer Infantry (1 [25 Jun], 2 [21? Jun], 3 [21 ? Jun]).
He reenlisted on 25 November 1863 (4).
He was promoted to corporal on 5 January 1864 (4).
He was captured on 16 May 1864, at Drury's Bluff, Virginia (4).
He died of disease on 30 September 1864, at Andersonville, Georgia, as a prisoner of war (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) (Albin [sic] Clark)
2 company G, register of men transferred (Alvin [sic] W Clark)
3 company G, descriptive roll, #84 (Alvin [?] W Clark)
4 Massachusetts Soldiers, Sailors, and Marines in the Civil War. Norwood, Massachusetts: Printed at the Norwood Press, 1932. Volume III, page 125. (Alvin W Clark)
[I did not find an entry for him in the index on <www.ancestry.com> to the pension index by name (searched January 2007)]