| | Esther Davidson 1908–2000 Arthur Baker Thomas Stone 1906–1996 | | |
Arthur Davidson 1911–1956 | | |
Charles James Colby 1916–1978 | | |
| | Esther Newton Blackett 1882–1969 | | | | Mary Taylor Duglass 1856–1942 |
| | | Thomas Blackett 1849–1912 Jane Thompson Newton 1849–1892 | | | | George Blackett 1802–1874 | | | | Elizabeth (Betty) Swindale 1779– | | | | Thomas Blackett 1742–1825 | | |
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