Arbre compact de Keith Roydhouse |
| Thomas Roydhouse 1790–1874 (84) | Thomas Robbins – | John Impey 1786–1849 (63) | | ||||||||||
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| Thomas Roydhouse 1819–1873 (53) |  | Benjamin Roydhouse 1849–1931 (81) |  | Esther Robbins 1819–1895 (76) | David Impey 1832–1881 (49) | | David Impey 1862–1935 (73) | | Emma Gadd 1838– | ||||
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| Mary Collins 1790–1861 (71) | Mary Ann Cliford – | Frances Wright 1791–1858 (67) | | ||||||||||
| Douglas Roydhouse 1887–1967 (79) |
| Olive Augusta Ester Impey 1894–1987 (92) | |||||||||||
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| Frederick Layton 1826– | | Ellen Mary Layton 1854–1919 (65) | | Elizabeth Penchon 1829– | | | Sarah Ann White 1864–1952 (88) | | | ||||
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