He was born in 1839/40 (3 (21 in 1861)). He was born in New York (3).
When he enlisted in the 27th Massachusets, he was living in Easthampton (4).
When he enlisted, he was a teacher or farmer (3 (farmer), 4 (teacher)).
When he enlisted, he was 5 feet 5-1/2 inches tall, and had a sandy complexion, blue eyes, and sandy hair (3).
He 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 was a private in company G (1, 5).
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]). When he was transferred, he was a private, in company G (5).
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)
5 index to compiled service records of volunteer Union soldiers who served in organizations from the state of Pennsylvania (Alvin W Clark)