1893–1956♂ Alfred Frederick George Roydhouse | | |
| | 1914–2009♂ Leslie Henry Grew 1923–♀ Maria Hector Eyckmans | | |
| | 1894–1968♀ Louise Dorothy Roydhouse 1894–1917♂ Harry Francis Grew | | |
1896–1970♂ George Thomas Roydhouse 1897–1981♀ Alice May Gladys Bertrand | | |
1902–1978♂ Percy Frederick Roydhouse 1892–1977♀ Ivy Pearl G. Collard | | |
| | 1904–1998♀ Rose Charlotte Roydhouse 1898–1990♂ Albert Edwin Hayter | | |
1909–1911♀ Hilda Mabel Roydhouse | | |
1938–♂ Brian D. Spiegelhalter | | |
| | 1914–♀ Irene J. Roydhouse 1910–♂ Milford Paul Spiegelhalter | | |
| | 1874–1945♀ Ada Louise Maycock 1872–1947♂ George Joseph Roydhouse | | |
