| | John Henry Polkinghorne 1857–1936 Adelaide Lovelock 1858–1930 | | | | John Polkinghorne 1830–1868 | | | | Martha Trescothick 1798–1844 |
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| | | Peggy Penberthy Bennetts 1829–1919 | | | | George Lovelock 1802–1853 | | | | William Lovelock 1756–1825 Elizabeth Newman 1767–1864 | | |
| | | Elizabeth Gilbert 1768–1840 |
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