See also

• William MADDISON's parents: Thomas MADDISON (1816-1889) and Elizabeth HARRISON (1816- )
• William MADDISON's siblings: Ann MADDISON (1840- ), Sarah MADDISON (1842- ), Margaret MADDISON (1843- ), James MADDISON (1844- ), Elizabeth MADDISON (1846- ), Robert MADDISON (1849-1886), Martha MADDISON (1851- ), Abel MADDISON (1852- ) and John MADDISON (1856- )