William N. Cone was the son of William Henry Cone and Sarah E. Branch Cone. He married Frances Elizabeth Long, the daughter of William Haddock Long and Caroline Lancaster. William Cone and Frances Elizabeth Long were married on 11 Dec 1888 in Columbia County, Florida. They had the following children: Nellie Estelle Cone b. 13 Aug 1889; George Houston Cone b. 19 Dec 1890; Annie Mae Cone b. 13 Dec 1893; William Ernest Cone b. Sept 1896; Juanita Gussie Cone b. 02 Mar 1898; and Emily Elizabeth Cone b. 18 Jan 1902.