Marmaduke was born about 1300 in Over Helmsley, Yorkshire, England, the son of Edmund de Thweng and Isabel Constable.
He died about 1369 in Over Helmsley, Yorkshire, England.
His wife was Agnes de Northwood. They were married, but the date and place have not been found. Their four known children were Joan Elizabeth (c1322-c1380), Marcella (c1340-?), Margaret (?-?) and William (?-?).
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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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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | ABT 1300 |
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| Death | ABT 1369 |
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