See also

• Mary WILLIAMS's parents: Thomas WILLIAMS (1799-1887) and Mary EDWARDS (1808-1880)
• Mary WILLIAMS's siblings: Thomas WILLIAMS (c. 1831-1910), Elizabeth WILLIAMS (1832-1893), Jane WILLIAMS (1834-1890), Margaret WILLIAMS (1836-1904), Morgan Edward WILLIAMS (c. 1837-1891), William Edward WILLIAMS (1841-1883), Griffith WILLIAMS (1843-1920), Ann WILLIAMS (1845-1850), Howell WILLIAMS (1846-1929), John WILLIAMS (1849-1855), Illtyd WILLIAMS (1853-1934) and Oliver WILLIAMS (1855-1906)