491-570
| King of Brittany Hoel, I | |
| B: | 491 |
| D: | 570 |
485-Yes, date unknown
| Alma Pompea De Domnonee | |
| B: | 485 |
| D: | Yes, date unknown |
475-Yes, date unknown
| Elaine Ferch Gwrleis, of Cornwall | |
| B: | 475 |
| D: | Yes, date unknown |
470-556
| King of Brittany Budic, I | |
| B: | 470 |
| D: | 556 |
| Duke of Cornwall Gwrleis Sap Ap Sartogys | |
| B: | 460 |
| D: | 490 |
452-Yes, date unknown
| Iferna Ferch Amlaydd, of Dumnonia | |
| B: | 452 |
| D: | Yes, date unknown |
|
445-Yes, date unknown
| Duke of Cornwall Sartogys Ap Pandwlff | |
| B: | 445 |
| D: | Yes, date unknown |