| Father | Male Gwilym ap Gruffydd |
| Born | Abt 1299 | of Penrhyn, Llandygai, Caernarvonshire, Wales |
| Died | Abt 1369 | |
| Buried | ||
| Married | ||
| Father | Gruffudd ap Heilin | F29616 Group Sheet | |
| Mother | Efa Verch Gruffydd | F29616 Group Sheet | |
| Mother | Female Gwenhwyfar Verch Ieuan |
| Born | Abt 1299 | of Rhuddlan, Rhuddlan, Flintshire, Wales |
| Died | ||
| Buried | ||
| Father | Ieuan ap Gruffudd | F29618 Group Sheet | |
| Mother | Angharad Verch Cynwrig | F29618 Group Sheet | |
| Child 1 | Male + Gruffydd ap Gwilym |
| Born | Abt 1321 | of Penrhyn, Llandygai, Caernarvonshire, Wales |
| Died | 1404 | |
| Buried | ||
| Spouse | Generys Verch Madog | F29577 | |
| Married | ||
| Child 2 | Male Bleddyn ap Gwilym |
| Born | Abt 1315 | of Penrhyn, Llandygai, Caernarvonshire, Wales |
| Died | ||
| Buried |