Isabel was born about 1266 in North Riding, Yorkshire, England, the daughter of unknown parents.
She died on 15 JAN 1337. The place is not known.
Her husband was John I de Marmion. They were married, but the date and place have not been found. Their only known child was sir John II (c1292-1335).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1266 |
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| Death | 15 JAN 1337 |
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