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Federal (USV)


Patrick Hennessey

(c. 1831 - 1864)

Home State: New York

Branch of Service: Infantry

Unit: 51st New York Infantry

Before Antietam

A 30 year old farmer, he enlisted in New York City and mustered as a Private in Company A, 51st New York Infantry on 20 September 1861. He transferred to Company G on 4 January 1862.

On the Campaign

He was wounded by a gunshot to his left leg in action at Antietam on 17 September 1862.

The rest of the War

He was admitted to US Army General Hospital #3 in Frederick, MD on 1 October and was transferred to Baltimore on 31 October. He was in hospitals in Washington, DC to at least June and returned to duty in November 1863. He reenlisted on 1 December 1863 and was killed in the Wilderness, VA on 6 May 1864.

References & notes

His service and other details from the Adjutant General1 and his Muster Roll Abstract, online from fold3. Wound and hospital details from the Patient List,2 as Patrick Hendersey. His gravesite is on Findagrave.


c. 1831 in IRELAND


05/06/1864; the Wilderness, VA; burial in Fredericksburg National Cemetery, Fredericksburg, VA


1   State of New York, Adjutant-General, Annual Report of the Adjutant General of the State of New York [year]: Registers of the [units], 43 Volumes, Albany: James B. Lyon, State Printer, 1893-1905, For the Year 1900, Ser. No. 25, p. 98  [AotW citation 30363]

2   National Museum of Civil War Medicine, and Terry Reimer, Frederick Patient List, Published 2018, first accessed 17 September 2018, <>, Source page: patient #207  [AotW citation 30364]