Gordon Blackett Cooper 1887–1937 | | | | William Edwards 1866–1918 Elizabeth Fleet 1871–1963 |
| | | William Frederick Cooper 1860–1930 Margaret Eleanor Blackett 1859–1938 | | | | William Frederick Cooper – |
| | | Johnson Blackett 1823–1918 | | | | Robert Blackett 1790–1846 | | | | George Blackett 1743–1830 |
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