Interactive tree of Ryan Joseph Gritt
2005–♂ Ryan Joseph Gritt
–♂ Tomas Gritt
1985–♀ Deborah Leane S. Roydhouse
1953–2011♂ David Roydhouse
1952–♀ Irene Jones
1929–2005♂ William James Roydhouse
1932–2009♀ Jean Huteson
–♂ … Jones
–♀ … Hartley