Assuming this man served in Arkansas, he is possibly Private Andrew J. McDonald, Company G, McNairís 4th Arkansas Infantry. Many of the men in this regiment came from Pike County, Arkansas, where Andrew was living in 1860. His birth year in this record was 1822. According to research done by Bryan Howerton, only two soldiers named Andrew J. McDonald served from Arkansas, and one did not survive. After the war, Andrew moved frequently over the next twenty years or so. We have no way of knowing where he was through census records in 1890 (those records were destroyed by fire). We do know, however, that the family was in Oklahoma at least by 1891 (his granddaughter was born in OK in that year). His sonís family appears in the 1900 census as residing in TWP 8, Choctaw Nation, Indian Territory.
A.J. McDonald household, 1860 U.S. Census, Thompson TWP, Pike County, Arkansas population schedule, page 11, lines 23-27, dwelling 81, family 81; National Archives micropublication M653, roll 47.
A.J. McDonald household, 1870 U.S. Census, Boone TWP, Scott County, Arkansas population schedule, page10, lines 16-24, dwelling 64, family 64; National Arcives micropublication M593, roll 63.
Andrew McDonald household, 1880 U.S. Census, Cauthron TWP, Logan County, Arkansas population schedule, page 32 D, ED 99, SD 2, lines 29-39, dwelling 53, family 54; National Archived micropublication T9, roll 50.
Tiliman C. McDonald household, 1900 U.S. Census, Township 8, Choctaw Nation, Indian Territory population schedule, page 12B, ED 85, lines 65-73, dwelling 219, family 219; National Archives micropublication T623, roll 1851.