Jonet was born about 1307 in Grosmont castle (Grisemount, Grisemond), Grosmont, Monmouthshire, Cymru , the daughter of unknown parents.
She died in 1346 in Meisayn, Penyc, Glamorganshire, Cymru.
Her husband was Ieuan ap Llywelyn. They were married, but the date and place have not been found. Their only known child was Llewellyn ap Ieuan (c1341-?).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1307 |
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| Death | 1346 |
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