Margaret Hay was born circa 1400 to William Hay (-1421) and Alicia de La Haye (c1375-) and died after 22 April 1484 of unspecified causes. She married William Douglas, 2nd Earl of Angus (c1398-1437) 3 December 1414 JL .
Children
| Name | Birth | Death | Joined with |
| James Douglas, 3rd Earl of Angus | |||
| George Douglas, 4th Earl of Angus (1417-1463) | 1417 | 12 March 1463 Abernethy | Isabella Sibbald |
| William Douglas of Cluny | |||
| Hugh Douglas | |||
| Helen Douglas | |||
Footnotes (including sources)
| ‡ General |
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| Ω Birth |
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