Everett Southworth Horton was born in Attleborough, Mass., on June 15, 1836, attended public schools until age sixteen, then worked in his father's store and eventually became its owner before selling the business in April 1862 to enlist in the Army. He served in many famous Civil War battles, including the Wilderness, Spotsylvania Court House, Cold Harbor, and Petersburg, and attained the rank of Major. While commanding the 58th regiment, he was captured on September 30, 1864, during the battle of Poplar Springs Church, spent five days at Libby Prison in Richmond, Va., was then sent to Confederate prisons in Salisbury, N.C., and Danville, Va., and after being returned to Libby in January 1865 remained there until his release in February. After the war he returned to Attleboro, became a partner in the Horton Angell Jewelry Co., served as Chairman of the Attleboro Board of Selectman, and later served in both the Massachusetts House of Representatives and Senate. He was one of the founders of the Attleboro Public Library and the Attleboro Trust Co., was active in veteran affairs through the Grand Army of the Republic and as head of its Attleboro Post, and, remembering the suffering and cruelty of prisoner-of-war camps, helped lead the effort in 1899 to petition the Massachusetts Legislature for a monument at the Andersonville, Ga., prison site in memory of the 767 Massachusetts soldiers who died there, then served on the memorial's planning commission and attended its 1901 dedication ceremony. He died on June 3, 1911, at age 74.