| | Lancelot Charles Threlkeld – Winifred Muriel Francis – | | |
| | Frederikke Christian Threlkeld 1910–1964 | | |
| | Eliza Jane Threlkeld 1912–1963 Henry Charles Tomlinson 1913– | | |
Philip Collin Threlkeld 1913– Mabel Elizabeth Spye Nolen – | | |
| | Isabella Mary Blackett 1877–1964 Lancelot Threlkeld 1871–1918 | | |
Evelyn Victoria Moorfoot – | | |
Emma Constance Rita Moorfoot – | | |
| | Anne Marie Frances Blackett 1878–1960 Thomas Moorfoot 1877–1918 | | |
Frederikke Adrina (Andrene) Blackett 1880–1975 | | |
| | Dorothy Irene Blackett 1911–2006 William George Craib 1911–1987 | | |
| | Andrew Benton Blackett 1912–1992 | | |
| | Patricia Louise Blackett 1921–2007 Wallace Howard Andrew 1897–1953 Claude Alexander Curry-Black 1894–1977 | | |
Robert Frederic Blackett 1925–2003 | | |
| | Andrew Benton Blackett 1882–1951 Ruby Pauline (Paulina) Mailman 1890–1952 | | |
Robert Cuthbert Neilson Blackett 1884–1964 | | |
| | John Robinson Blackett 1887–1960 Myra Victoria Blackett 1890–1966 | | |
Pierrie Ludvig (Ludwig) Blackett 1894–1917 | | |
Aileen Margaret Blackett 1897–1968 Charles Ernest Carlson –1968 | | |
| | Frederikke Marie Neilson 1854–1926 Andrew Benton Blackett 1851–1931 | | |
| | Anne Marie Hjoring Brems 1827–1914 Peder (Peter) Ludwig Neilson 1824–1898 | | |