עץ הקומפקטי של Peter Grant McCrostie |
| John McCrostie 1810–1887 (76) | Robert Grieve 1833–1913 (80) | | | ||||||||||
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| John McCrostie 1842–1920 (78) |  | John James McCrostie 1885–1945 (60) |  | Isabella Grieve 1859–1917 (58) | | | Donald Grant Stronach 1893–1970 (77) | | | ||||
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| Jessie Ann Robertson 1814–1898 (84) | Isabella Mary Cully 1834–1908 (74) | | | ||||||||||
| John Charles McCrostie 1917–1960 (43) |
| Bette Queenie Stronach 1919–2017 (97) | |||||||||||
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| Charles McDougall – | | Martha Jack McDougall 1886–1962 (76) | | Isabella … – | | | Gladys Eveline Louise Page 1894–1974 (79) | | | ||||
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