Interactive tree of Zachary Barrett Roydhouse
1990–♂ Zachary Barrett Roydhouse
1947–♂ John Douglas Roydhouse
–♀ Janice Francis Rodd
–♀ Robyn Barrett
1923–2011♂ Donald Jack Roydhouse
–♀ Margaret Maddern
1892–1986♂ Jack Roydhouse
1896–1970♀ Kathleen Ivy Finlay
1868–1931♂ John Charles Roydhouse
1866–1941♀ Grace Thomas
1862–1942♂ James Finlay
1867–1937♀ Louise Smith
1912–♂ Alfred John Rodd
–♀ Theda Gwendoline Newbigging