King of Gwynedd and of Deheubarth Llywelyn Ap Seisyll
- 1023(Notes: You may have to scroll down or right to see chart.)
| Bernard De Neufmarché | |
| B: | Abt 1050 |
| D: | 1125 |
| Maredudd Ap Gruffydd | |
| D: | 1069 |
| Idwal Ap Gruffydd | |
| D: | 1069 |
| Gruffydd Ap Llywelyn | |
| B: | Abt 1007 |
| D: | 5 Aug 1063 |
| Edith of Mercia | |
| B: | England |
| D: | Aft 1070 |
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| Llywelyn Ap Seisyll | |
| D: | 1023 |
