Joan was born about 1322 in Helmsley, North Yorkshire, England, the daughter of sir Marmaduke de Thweng and Agnes de Northwood.
She died about 1380 in Harpham, East Riding, Yorkshire, England.
Her husband was sir William de St. Quintin. They were married, but the date and place have not been found. Their six known children were Anthony (c1340-?), John (c1347-1397), Alice (c1351-?), Joan (c1353-c1390), Mathilde (c1353-?) and Agnes (c1357-?).
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Joan Elizabeth de Thweng |
sir Marmaduke de Thweng |
Edmund de Thweng |
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Isabel Constable |
Robert Constable |
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Katherine de Mauley |
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Agnes de Northwood |
sir John de Northwode |
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Agnès de Grandson |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | ABT 1322 |
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| Death | ABT 1380 |
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