Isabel was the daughter of Gruffyd II Fychan ap Gruffudd and Elen verch Thomas. The date and place of her birth have not been found.
Her husband was Adda ap Iorwerth Ddu. They were married, but the date and place have not been found. They had no known children.
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Gruffyd II Fychan ap Gruffudd |
Gruffudd Llwyd ap Madog Vychan |
Madog II Vychan ap Gryffydd Maelor |
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Gwenllian verch Ithel Vychan |
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Elizabeth le Strange |
John V le Strange |
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Maud d'Eiville |
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Thomas ap Llewellyn |
Llewellyn ap Owain |
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Eleanor verch Philip Goch |
Philip ap Ivor |
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Gwenllian verch Llewellyn |
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