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 | Robert Duncan Thomson (1898-1973)
|
 | Helen "Beatrice" Dryden (1902-1991) |
| Mary "Yvonne" Thomson (1925- )  |
| Duncan Dryden Thomson (1929- ) |
| Ethel Beatrice Thomson (1931- ) |
| Gordon Everard Williamson (1923-2005) |
| Dorothy-Jane Thomson (1927-1995)
|
