Rhiwallon ap Cynfyn
Abt 1020 - 1069 (~ 49 years)(Notes: You may have to scroll down or right to see chart.)
| Maurice FitzGerald, Lord of Lanstephan | |
| B: | Abt 1105 |
| D: | Sep 1177 |
| Nest ferch Rhys, ap Tewdwr | |
| B: | Abt 1085 |
| D: | Bef 1136 |
| Gerald de Windsor | |
| B: | 1070 |
| D: | 1136 |
| Henry fitz Henry | |
| B: | Abt 1103 |
| D: | Abt 1157 |
| Anglesey, Wales | |
| Henry, I of England | |
| B: | Sep 1068 |
| Selby, Yorkshire, England | |
| D: | 01 Dec 1135 |
| Saintt-Denis-le-Fermont, Picardie, France | |
| Rhys ap Tewdwr | |
| B: | Bef 1065 |
| Carmarthenshire, Wales | |
| D: | Apr 1093 |
| Rhiwallon ap Cynfyn | |
| B: | Abt 1020 |
| D: | 1069 |
| Unknown |