Efa was born in 1311, the daughter of unknown parents. The place is not known.
She died about 1345. The place is not known.
Her husband was Ieuan ap Gruffudd. They were married, but the date and place have not been found. Their only known child was Nest verch Ieuan (1366-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | 1311 |
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| Death | ABT 1345 |
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