James R. Ritchie 1909–1965 Hartley Pounder 1905–1976 | | |
| | Margaret Blackett 1880–1973 | | | | William Blackett 1853–1885 Margaret Russell 1854–1918 | | | | George Blackett 1829–1854 | | | | George Blackett 1795–1859 Ann (Foscott) Postgate 1799–1856 | | | | George Blackett 1743–1830 |
| | | Robert Postgate 1765–1847 |
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