Gwilym was born about 1240, the son of unknown parents. The place is not known.
He died after 1312. The place is not known.
His wife was Isabel verch Llywelyn, who he married in ABT 1259. The place has not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1240 |
|
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| Death | AFT 1312 |
|
Note 1
son of Einion Fawr ap Gwilym and Tudo ferch Cadwgon