| | | | | | Charles Wesley Nelson 1906–1975 Mary Dorothy Blackett 1909–1974 | | | | Frank Hardy Blackett 1884–1949 Lillian Gertrude Bocker 1887–1982 | | | | John William Blackett 1848–1927 Elizabeth Jane Averett 1854–1931 | | | | Robert Collingwood Blackett 1807–1878 Eleanor (Ellen) Mitchell 1810–1884 | | |
| | | Juduthan Hardy Averett 1816–1902 Holly Jane Tingle 1818–1893 |
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| | | Mary Roxena Dodge 1858–1908 |
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