| | David Boswell, 2nd of Balmuto 1431–1496 | | | | David Boswell, 1st of Balmuto 1411–1490 Elizabeth Melville 1413–1470 | | | | John Boswell of Balgrevy 1372–1429 Mariota Jardyne 1380–1426 | | |
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| | | William Sinclair, 3rd Earl of Orkney, 1st Earl of Caithness 1404–1480 | | | | Henry Sinclair, 2nd Earl of Orkney 1375–1419 Egidia Jill Douglas 1391–1438 | | | | William Douglas of Nithsdale 1370–1391 | | |
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