| | Theobald Grenville Sir …–… | | |
| | Matilda (Maud) Beaumont …–1467 | | |
| | John Beaumont Lord Beaumont …–1342 Eleanor Plantagenet of Lancaster …–1372 | | |
| | Henry Beaumont Earl of Buchan 1288–1340 | | |
| | Alexander Comyn Sheriff of Aberdeen 1270–… | | | | Alexander Comyn 2nd Earl of Buchan 1217–… Elizabeth de Quincy 1220–1282 | | | | Roger de Quincy 2nd Earl of Winchester …–… | | | | Alan … Lord of Galloway …–… | | | | Roland … Lord of Galloway …– | | |
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