See also

• John HARTWELL's parents: John HARTWELL (1853-1914) and Letitia Blanche GILL (1859-1924)
• John HARTWELL's siblings: Ada Elizabeth HARTWELL (1880-1930), Ester Adeline HARTWELL (c. 1882-c. 1944), Matthew John W HARTWELL (c. 1884-c. 1940), Louis Gilbert HARTWELL (1886-1943), Edith Sophia HARTWELL (1888-1903), Laura Jane HARTWELL (1890-1950), Bertram Nigel HARTWELL (c. 1894-1918), Ann Selecia Blanche HARTWELL (1898-1979) and Madeline Maude HARTWELL (1900-1985)