Árvore interativa de John Collingwood
1959–♂ John Collingwood
–♀ Brigid Brennan
1924–1996♂ Trevor Carlton Collingwood
–♀ Ruth Leney
1894–1984♂ Guy Carlton Collingwood
1893–1965♀ Marjorie Watson Pennington
1865–1893♂ William Tipping Pennington
1861–1917♀ Annie Amelia Watson
1830–1887♂ Richard Pennington
1836–1929♀ Elizabeth Cash
–♂ Dr … Watson MRCS
1829–♀ Elizabeth Amelia Bowman