Howard William Blackett 1909–1979 Mildred L. Gilles 1911–1990 | | |
Kenneth Emory Blackett 1912–1955 | | |
Patricia Marie Blackett 1917–1989 | | |
| | Howard Blackett 1885–1971 Margaret E. Nally 1888–1956 | | | | Alfred Tennyson Blackett 1855–1934 Magdalena (Madeline) George 1858–1939 | | | | Thomas Blackett 1819–1899 | | | | Robert Blackett 1796–1835 Elizabeth (Betty) Buckley 1799–1866 | | | | Thomas Blackett 1773–1821 | | |
| | | Elizabeth (Betty) Ramsden – |
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| | | Mary English or Bell (see note) 1786–1871 |
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| | | Valentine George 1804–1875 |
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