עץ אינטראקטיבי של ‪William Turvill‬
1970–♂ William Turvill
–♂ Allan Turvill
1942–♀ Phyllis Pennington
1902–1973♂ Thomas Wilfred Pennington
1907–1985♀ Jocelyn Edith Hasler
1870–1958♂ Thomas Sedon Pennington
1872–1942♀ Agnes Carter
1830–1887♂ Richard Pennington
1836–1929♀ Elizabeth Cash