Isabel was born about 1315 in Castle Heaton, Heaton, Northumberland, England, the daughter of sir Thomas II de Grey and Agnes de Beyle.
Her husband was William Swynburne Heron. They were married, but the date and place have not been found. Their only known child was sir Roger (c1330-c1391).
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Isabel de Grey |
sir Thomas II de Grey |
sir Thomas de Grey |
Robert de Grey |
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Joan de Valoines |
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Agnes de Beyle |
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| Event | Date | Details | Source | Multimedia | Notes | ||
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| Birth | ABT 1315 |
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