Joseph Benjamin Blackett 1879–1952 | | |
Sarah Jane Sawer 1885–1958 Richard Tunstall 1881–1952 | | |
| | Margaret Blackett 1852–1932 | | |
| | | | | | Benjamin Blackett 1804–1874 | | | | Jeremiah Blackett 1775–1809 Nanny (Nancy) Eubank 1780–1872 | | | | Benjamin Blackett 1745–1818 Margaret Gibson 1747–1833 | | | | Jeremiah Blackett 1708–1781 | | |
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