(1840 - 1925)
Home State: Massachusetts
Command Billet: Company Officer
Branch of Service: Infantry
see his Battle Report
From Lowell, MA, he was appointed First Lieutenant, Company A, 2nd Massachusetts Infantry on 28 May 1861 and transferred out on 2 July. He was commissioned Captain, Company G, 19th Massachusetts Infantry on 22 August 1861.
On the Campaign
He assumed command of the regiment at Antietam on 17 September 1862 as senior officer after Colonel Hinks and Lieutenant Colonel Devereaux were wounded.
The rest of the War
He was in command of the regiment at Fredericksburg on 13 December 1862, Colonel Devereaux being very sick in camp. He was severely wounded in the left leg there, and it was amputated. He was discharged from the 19th Massachusetts on 4 April 1863 for disability.
On 4 May 1864 he was commissioned Major, First US Volunteer Infantry, and served on guard duty with "a cork leg" at Point Lookout, MD, where he was not well liked by the prisoners. The First US may later have included "galvanized" Confederate prisoners from Point Lookout, and he commanded a detachment which served in the Carolinas before he mustered out of service on 27 November 1865.
After the War
He began receiving a Federal invalid's pension in 1866 and by 1875 was a clerk in the Customs Service, US Department of the Treasury in the Customs House, Boston. He was a member of the Military Order of the Loyal Legion (MOLLUS) and the Grand Army of the Republic (GAR) veterans' groups, and wrote for Century Magazine (later in Battles & Leaders) about the action at Fredericksburg. By 1909, the year his son Frederick Abbott Weymouth was married, he was living on Beech Street in Cambridge, MA; a clerk.
References & notes
His service from Soldiers, Sailors, and Marines.1 Details from Adams' Reminiscences of the Nineteenth Massachusetts Regiment (1899) and a bio sketch in Alonzo Quint's Record of Second Massachusetts Infantry: 1861-1865. Point Lookout and "cork leg" details from an 1866 story by former prisoner Anthony Keilly in the Southern Historical Society Papers (Vol. 1, No. 4 - 1876). His occupation from the Official Register of the United States (1901), an 1875 Boston City Directory, and a 1907 Cambridge City Directory. His gravesite is on Findagrave. His death date is seen as 7 January 1925 in his pension records.
More on the Web
The Harrison G. O. Weymouth Papers, 1861-1885 are in the Massachusetts Historical Society, Boston. He's also in a photograph in their collection of some officers of the 2nd Massachusetts taken in 1861, source of his picture above.
8/16/1840; Clinton, ME
01/10/1925; burial in Arlington National Cemetery, Arlington, VA