1896–1970♂ George Thomas Roydhouse 1897–1981♀ Alice May Gladys Bertrand | | | | 1872–1947♂ George Joseph Roydhouse 1874–1945♀ Ada Louise Maycock | | | | 1844–1918♂ Joseph Thomas Roydhouse 1844–1930♀ Charlotte Pocock | | | | 1816–1849♂ Thomas Henry Roydhouse | | |
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| | | 1845–1920♂ William Maycock 1846–1928♀ Mary A. Thomas | | | | 1815–1876♂ Benjamin Maycock |
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| | | 1872–1915♂ John Edward Bertrand |
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