Elizabeth Norton Blackett – | | |
| | Robert Blackett 1922–1974 Barbara Bagnall 1920–1996 | | |
Jean Agnes Blackett 1924–2001 | | |
| | James Turnbull Blackett 1930–2021 | | |
| | Robert Blackett 1898–1974 | | | | Robert Turnbull Venters 1874–1948 |
| | | George (Cunningham or) Blackett 1871–1947 | | | | Robert Blackett 1853–1921 Ellen Cunningham 1852–1882 Maria Jane Hall 1852–1924 | | | | Robert Blackett 1828–1882 | | | | George Blackett 1802–1874 | | |
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| | | | Mary Ann Aitken 1821–1906 |
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