Caroline Margaret Blackett – | | |
Georgina Isabella Blackett – | | |
Christopher James Blackett – | | |
| | John Richard Thursfield Blackett – Paz del Rosario Villanueva 1957–1991 | | |
Charles Patrick Blackett – | | |
| | John Basil Goldney Blackett 1922–2001 Audrey Rosamond Thursfield 1925–1999 | | |
| | John Hartley Wadsworth 1864–1919 John Patrick Murray Blackett 1868–1964 | | |