Abt 1335 - Abt 1399 (~ 64 years)
| Howel ap Madog Vaughan Abt 1430-Aft 1442 |
| Howel ap Madog Vaughan | |
| B: | Abt 1430 |
| Llanystumdwy, Caernarvonshire, Wales | |
| D: | Aft 1442 |
 | Erddylad ferch Howel Abt 1450- |
| Erddylad ferch Howel | |
| B: | Abt 1450 |
| Wales | |
| Madog ap Ieuan Abt 1390-1416 |
| Madog ap Ieuan | |
| B: | Abt 1390 |
| Llanystumdwy, Caernarvonshire, Wales | |
| D: | Aft. 1416 |
| Gwerfyl ferch Rhys Abt 1400- |
| Gwerfyl ferch Rhys | |
| B: | Abt 1400 |
| Wales | |
|
| Ieuan ap Einion Abt 1335-Abt 1399 |
| Ieuan ap Einion | |
| B: | Abt 1335 |
| Wales | |
| D: | Abt 1399 |
| Gwenhwyfer ferch Ynyr Vychan Abt 1365- |
| Gwenhwyfer ferch Ynyr Vychan | |
| B: | Abt 1365 |
| Wales | |
