Arbre interactiu de Howard Roydhouse
1969–♂ Anthony Howard Roydhouse
1972–♀ Angela Roydhouse
–♂ ... Mountain
1949–♂ Howard Roydhouse
–♀ Ann Benson
1916–1985♂ Arthur Roydhouse
1921–1996♀ Nancy Ilene Gardiner
1886–1963♂ Arthur Roydhouse
1887–1976♀ Eliza Nicholson
1854–1900♂ William Clark Roydhouse
1855–1932♀ Elisabeth Harrison
1822–1901♂ James Roydhouse
1831–1880♀ Ann Johnson
1823–1874♂ Mark Harrison
1823–1906♀ Jane Jackson
1863–1914♂ Charles Nicholson
1860–1906♀ Ruth Blackburn