| Sonia Mary Peake |
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| Daughter of: | Osbert Peake, 1st Viscount Ingleby | |||
| and: | Lady Joan Rachel de Vere Capell | |||
| born: | 1924 | |||
| died: | 2009 | |||
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| x Saturday 26 October 1946 David George Montagu Hay, 12th Marquess of Tweeddale (divorced 1958) | ||||
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| 1. | Edward Douglas John Hay, 13th Marquess of Tweeddale | |||
| 2. | Charles David Montagu Hay, 14th Marquess of Tweeddale | |||
| 3. | Alistair James Montagu Hay | |||
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| Daughter of: | |
| and: | |
| born: | Thursday 21 May 1925 |
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| x John Wallace Dundas | |
| the following children were born of this union: | |
| 1. | Virginia Ann Dundas |
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| Daughter of: | ||
| and: | ||
| born: | Saturday 17 July 1954 | |
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| x Donald Robert Dundas Bartolucci | ||
| Charles Pollock |
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| Son of: | |
| and: | |
| born: | |
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| x Ida Dundas Bartolucci | |
| Marguerite Christine Ralli |
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| Daughter of: | Alexander Ralli |
| and: | Helen |
| born: | |
| died: | 1944 |
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| the following children were born of this union: | |
| 1. | Lady Helena Candida Hay |
| 2. | Lady Marguerite Georgina Christine Hay |
| 3. | Lady Christine Daphne Hay |
| 4. | Lady Francis Elizabeth Ann Hay |
| Alexander Ramsay |
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| Son of: | |
| and: | |
| born: | Banff, Aberdeenshire, Scotland |
| died: | |
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| x Jean Dundas | |