Hywel was born about 1302 in Abercrai, Taean Glas, Breconshire, Cymru, the son of unknown parents.
His wife is not known. They were married, but the date and place have not been found. Their only known child was Gwilym ap Hywel Grach (c1325-?).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1302 |
|