William was born before 1368 in Borthwick castle, Gorebridge, Midlothian, Scotland, the son of sir William de Borthwick and Bethoc Sinclair.
He died before 1429 in Lochorwart castle, Goregridge, Midlothian, Scotland.
His wife was Rachel de Haya. They were married, but the date and place have not been found. Their six known children were William (c1414-c1483), George (c1385-1447), Margaret (1388-?), Janet (1388-1464), Agnes (c1390-?) and John (c1393-?).
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sir William de Borthwick |
sir William de Borthwick |
Thomas I de Borthwick |
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Bethoc Sinclair |
Henry I Sinclair |
William Sinclair |
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Isabel Strathearn |
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sir John de Halyburton |
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Margaret Cameron |
| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | BEF 1368 |
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| Death | BEF 1429 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | laird of Borthwick 2° |