Interactive tree of Christine Susan Roydhouse
1971–♂ Michael David Sweet
1975–♂ Stuart James Sweet
1948–♀ Christine Susan Roydhouse
1942–♂ David Henry Sweet
1911–1985♂ Lewis Roydhouse
1915–1986♀ Mary Garland
1886–1963♂ Arthur Roydhouse
1887–1976♀ Eliza Nicholson
1854–1900♂ William Clark Roydhouse
1855–1932♀ Elisabeth Harrison
1863–1914♂ Charles Nicholson
1860–1906♀ Ruth Blackburn
1891–1979♂ Harold Storey Garland
–♀ Mary Susan Sands
–♂ … Sweet
–♀ … Cook