| | Henry Beaumont Earl of Buchan 1288–1340 | | |
| | Alexander Comyn Sheriff of Aberdeen 1270–… | | |
| | Robert de Umfreville 2nd Earl of Angus …– | | |
| | Gilbert de Umfreville 1st Earl of Angus …– | | |
| | Elizabeth de Quincy 1220–1282 Alexander Comyn 2nd Earl of Buchan 1217–… | | |
| | Roger de Quincy 2nd Earl of Winchester …–… | | |
| | Alan … Lord of Galloway …–… | | | | | Roland … Lord of Galloway …– | | | | | | | | Fergus … Lord of Galloway …– | | | | King of England Henry I Beauclerc … 1068–1135 | | |
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