Thomas Cowperthwaite 1886–1951 | | |
George E Cowperthwaite 1889–1933 | | |
John Cowperthwaite 1891–1968 | | |
Frances Kathryn Burlett 1944–2018 Charles Raymond Lourie …– | | |
| | John Henry Burlett 1914–1983 Kathryn Yvonne Avis 1917–1995 | | |
Thomas Henry Slavens 1937–2011 Laura Lynn Williams 1939–2005 | | |
| | Dorothy Marguerite Burlett 1916–1999 Harry Layfayette Slavens 1913–1984 William Henry Borowski 1901–1972 | | |
Frank Thomas Burlett 1919–1981 | | |
| | May Isabelle Cowperthwaite 1894–1981 John Nicholas Burlett 1883–1930 | | |
| | William Henry Cowperthwaite 1860–1903 | | | | George Cowperthwaite 1834–1891 | | | | Eleanor Atkinson 1806–1872 | | | | George Atkinson 1779–1843 Bella Rawlinson 1787–1845 | | | | George Atkinson 1755–1800 Thomasin Hebblethwaite 1750–1818 | | |
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