Robert J. Logan and William A. Logan, sons of Euclid Washington Logan and Queen Della Benedict Logan, served in Co. D, 110th Illinois Volunteer Infantry Regiment. They were both born in Allen County, Kentucky, and lived in Perry County, Illinois. Corporal William A. Logan was wounded 1 September 1864 during the Battle of Jonesboro (part of the Atlanta campaign). His leg was amputated and he received a disability discharge. Sergeant Robert J. Logan died of wounds 16 April 1865 at DeCamp Hospital, David’s Island, New York Harbor. He is buried at Cypress Hill National Cemetery, Brooklyn, New York. William A. Logan died of paralysis 3 September 1876 in Henry County, Missouri. His widow, Sarah M. Garrison Logan, moved to Butler County, Kansas, where her father, Luther Garrison, and stepmother, Eliza Logan Garrison lived.
The captain of Co. D (see below) was Joel P. Watson. One of Joel Perry Watson’s daughters was Gail Watson. She married Robert Oliver Logan, son of Andrew Jackson “Jack” Logan and Catherine Charlotte Guthrie Logan.