Giles P. Chapman was born in South Carolina. At the outbreak of the Civil War, he was farming with his wife Martha and several children in Sumter County, Florida. His parents still resided in South Carolina. In May 1862, Chapman enlisted in the Marion Dragoons, which later became Company C, Second Florida Cavalry Regiment. He was discharged for disability in December of that same year and died in November 1863 from measles complications. His wife apparently moved back to Newberry, South Carolina to be with his family. She eventually returned to Florida and received a postwar pension from the state.
From the description of Papers, 1858-1883. (Florida State Archive). WorldCat record id: 32413328