Compact tree of Ivan Sinclair Swan
| Henry Thomas Swan 1846–1882 | Frederick George Lough 1876–1985 | ||||||||||||
| Carlyle Bruce Swan 1893–1954 |
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Fredericka Bernice Lough 1894–1985 | |||||||||||
| George Frederick MacKenzie – | Alice Isabelle Margaret Mackenzie 1856–1945 | Mahalah MacKenzie – | Theresa Harriet Swan 1864–1903 | ||||||||||