Interactive tree of Joan Birkby Roydhouse
1940–1986♀ Joan Birkby Roydhouse
1892–1973♂ Harry Roydhouse
1893–1936♀ Hannah Mary Senior
1913–1985♀ Agnes Gertrude Birkby
1866–1939♂ William Richardson Roydhouse
1870–1936♀ Frances Elizabeth Cox
1839–1898♂ John Roydhouse
1837–1888♀ Hannah Richardson
–♂ William Senior