- 150
| Roman Emperor Flavius Valerius Aurelius Constantinus, Augustus | |
| B: | 27 Feb 272 |
| Yugoslavia | |
| D: | 22 May 337 |
| Augusta Saint Helena | |
| B: | 246 |
| D: | 330 |
| Turkey | |
| Roman Emperor Marcus Flavius Valerius Constantius Herculius, Augustus | |
| B: | 31 Mar 250 |
| D: | 25 Jul 306 |
| Sandde ap Alcwn | |
| B: | 660 |
| Montgomeryshire, Wales | |
| Celemion verch Tudwal | |
| B: | 684 |
| England | |
| Prince of Deheubarth Tegid ap Gwair | |
| B: | Abt 625 |
| Montgomeryshire, Wales | |
| D: | 711 |
| Breconshire, Wales | |
| Lady Anne Ardette | |
| M: | Wales |
| Gwair ap Dwywg | |
| B: | Abt 580 |
| Breconshire, Wales | |
| D: | Breconshire, Wales |
| Dwywg ap Llywarch | |
| B: | Abt 555 |
| Breconshire, Wales | |
| D: | 593 |
| Breconshire, Wales | |
| Llywarch Hen ap Elidyr | |
| B: | Abt 520 |
| Scotland | |
| D: | Montgomeryshire, Wales |
| Elidir Lydanwyn ap Meirchion | |
| B: | 480 |
| England | |
| D: | Montgomeryshire, Wales |
| King of the Celts Meirchion Gul | |
| B: | 438 |
| England | |
| D: | 535 |
| Wales | |
| Essylt ferch Culwynedd | |
| B: | 440 |
| England | |
| D: | England |
| Gwrwst Ledlwm | |
| B: | 450 |
| England | |
| D: | Wales |
| King of Northern Britain Saint Ceneu ap Coel | |
| B: | Abt 382 |
| Yorkshire, England | |
| D: | England |
| King of the Britons Coel Croilus Hen | |
| B: | Dorset, England |
| D: | 150 |
| England | |
We make every effort to document our research. There is a lot of information that I do not have, and I know there are mistakes in this tree. My feelings will not be hurt if you give me corrections or additional information, especially if you can provide sources for the information.
