| | 1931–2008♂ Brian Peter Roydhouse 1936–♀ Alison Myra Corbett | | | | 1905–1966♂ William John Roydhouse 1907–1989♀ Millicent Mildred Adams | | | | 1877–1943♂ Francis William Roydhouse 1883–1973♀ Muriel Blanch Crawley | | |
| | | 1879–1932♂ Walter R. Adams 1881–1934♀ Alice Eliza Smart | | |
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| | | 1895–1974♂ Edward Corbett 1897–1980♀ Alice Ester Blyde | | | | 1865–1943♂ William Corbett |
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