William Coleman was born around 1832 in South Carolina to George Coleman and Mary Ann Kennedy. His father died sometime in the late 1840s. Coleman grew up and attended school in Chester District, South Carolina, and by 1860, he owned $3,000 of personal property. He enlisted in the Confederate army on April 11, 1861, and he mustered in as a private in the 6th South Carolina Infantry. The regiment took part in the Battle of Seven Pines, the Seven Days’ Battles, the Second Battle of Manassas, the Battle of Antietam, the Battle of Fredericksburg, the Overland Campaign, and the Appomattox campaign. He surrendered on April 9, 1865, as part of General Robert E. Lee’s Army of Northern Virginia. He died sometime after April 1865.