| Children |
| | 1. SINCLAIR, COUNTESS OF ANNANDALE AND DOUGLAS, Lady Beatrix "Beatrice", b. Abt 1407, d. 8 Feb 1462, Douglas Castle, Lanarkshire, Scotland (Age ~ 55 years) [natural] |
| | 2. SINCLAIR, Sir William 3rd Earl of Cathiness, b. 1408, Roslin, Midlothian, Scotland , d. 28 May 1480, Kirkcaldy, Fife, Scotland (Age 72 years) [natural] |
| | 3. CAITHNESS, Orkney, b. 1408, Caithness, Scotland , d. Mar 1481, Kirkcaldy, Fife, Scotland (Age 73 years) [natural] |
| | 4. SINCLAIR, William 1st Earl of Caithness, b. 1410, Caithness, Scotland , d. 29 Mar 1484, Kirkcaldy, Fife, Scotland (Age 74 years) [natural] |
| | 5. SINCLAIR, Elizabeth, b. 1410, Caithness, Scotland [natural] |
| | 6. SINCLAIR, Margaret, b. 1419 [natural] |
| | 7. SINCLAIR, William Waster Lord, b. 1430, Caithness, Scotland , d. 14 Jul 1487, Dunfermline, Fife, Scotland (Age 57 years) [natural] |
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