George Robert Brown 1928–1948 | | |
Margaret Hutchinson 1934–1991 | | |
| | Edith Maud Blackett 1903–1966 | | | | George William Brown 1871–1931 |
| | | Robert Blackett 1874–1926 Hannah (Anna) Elizabeth Groves 1874–1955 | | | | Cuthbert Simpson Blackett 1847–1902 Ann Elizabeth Marquick 1848–1905 | | | | Robert Blackett 1820–1880 Alice Richardson 1827–1878 | | | | Robert Blackett 1776–1854 | | |
| | | John Richardson 1799–1866 | | |
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| | | Cecilia Ann Simpson 1850–1933 | | |
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