| Father | Llewelyn ap Hywel (1330 - 1412) |
| Mother | Maud verch Ieuan (1329 - 1424) |
| Sibling | Dafydd Gam ap Llewelyn ap Hywel (1360 - 1415) |
| Sibling | Morgan Ap Llewelyn (1353 - 1407) |
| Sibling | Jenkin Ap Llewelyn (1355 - 1407) |
| Sibling | Hywel ap Llywellyn (1356 - 1438) |
| Sibling | John Ap Llewelyn (1358 - ) |
| Sibling | Alice Ferch Llewelyn (1364 - ) |
| Sibling | Thomas ap Lewys (1364 - ) |
| Sibling | Ffelis Ferch Llewelyn (1367 - ) |
| Sibling | Gwilym ap Llywellyn (1369 - 1407) |
| Sibling | Elen ferch Llywelyn (1370 - ) |
| Sibling | Jonet verch Llywelyn (1371 - ) |
| Sibling | Roger Ap Llewelyn (1374 - ) |
| Sibling | Gronwy ap Hywel ( - 1315) |
| Sibling | Iorwerth ap Hywel ( - 1315) |