Isabel was the daughter of sir Edmund Deincourt and Isabel de Mohun. The date and place of her birth have not been found.
She died after 1348. The place is not known.
Her husband was sir William FitzWilliam. They were married, but the date and place have not been found. Their ten known children were Elizabeth (c1328-c1416), sir William (?-1322), John (c1298-1349), Thomas II (c1302->1345), Robert (?-?), Reginald (?-?), Margaret (c1302-?), Joan (?-?), Agnes (?-?) and Isabel (?-?).
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Isabel Deincourt |
sir Edmund Deincourt |
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Isabel de Mohun |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Death | AFT 1348 |
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