| | Robert Vlao Blackett 1877–1945 Hannah Ann Smith 1881–1935 | | | | Robert Blackett 1845–1887 Matilda Ann Ostler 1858–1896 | | | | Robert Collingwood Blackett 1807–1878 Eleanor (Ellen) Mitchell 1810–1884 | | |
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| | | John Abraham Smith 1843–1925 |
| | | Ellen Josephine Robertson 1876–1948 |
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