James Howard Blackett 1874–1953 | | | | | Mary Maria Howard 1843–1933 | | | | Cuthbert Blackett 1804–1886 | | | | Joseph Blackett 1780–1869 Elizabeth Stephenson 1784–1874 | | | | Cuthbert Blackett 1745–1809 | | |
| | | Ralph Stephenson 1753–1829 | | |
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| | | Elizabeth (Collin) Colling – |
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| | | James (Heward) Howard 1817– |
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