My gg-grandfather James Collins (born 1832 in Galway, Ireland) was a Sergeant Major with the 63rd NY Volunteers who fought with the Second Corps, Army of the Potomac as part of the Irish Brigade. After volunteering in 8/1861 and surviving the entire war James was wounded and captured at the Battle of Jerusalem Road at the Second Battle of Peterburg. He was sent to Libby Prison in Richmond where he died on either 7/1/1864 or 8/1/1864 (based on separate sources). His pension record has him buried at Mt. Arlington. He is not at Arlington National Cemetery nor is he at Mt. Arlington, NJ Cemetery. Folks have suggested that he might be at one of the five large Civil War cemeteries around Richmond but I do not know which ones they mean. Can anyone tell me the names of these cemeteries. His wife and kids never knew where he was buried.