עץ אינטראקטיבי של ‪George Henry Sidwell‬
1950–♀ Judith A. Roydhouse
1953–♀ Janet Roydhouse
–♂ Edward C. Sweeney
1927–1974♂ Clifford Roydhouse
–♀ Audrey Dickins
1893–1964♀ Lilian Sidwell
1889–1958♂ Albert Edward Roydhouse
1866–♂ George Henry Sidwell
1869–1955♀ Agnes Morfitt