William Blackett Sneath – | | |
Alexander Blackett Sneath – | | |
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| | Clifford Blackett 1918–1997 Vera Bainbridge 1928–1998 | | |
| | George Blackett 1886–1963 | | | | | William Blackett 1844–1914 Elizabeth Robson 1846–1923 | | | | William Blackett 1820–1881 | | | | Joseph Blackett 1780–1869 Elizabeth Stephenson 1784–1874 | | | | Cuthbert Blackett 1745–1809 | | |
| | | Ralph Stephenson 1753–1829 | | |
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