Family: John (1st Baron Tweedsmuir) Buchan, GCMG, GCVO, CH, PC / Susan Charlotte Grosvenor (F50396)
m. 15 Jul 1907
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 | Rev John Buchan (1847-1911)
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 | Helen Jane Masterton (1857-1937)
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| Anna Masterton Buchan (1877-1948) |
| Unknown Buchan (1898-1993) |
| Susan Charlotte Grosvenor (1882-1977)
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| William (3rd Baron Tweedsmuir) Buchan (1916-2008) |
