A genealogy of the Heath, Palmer, Thayer, Goodnow, and other allied families.
 | Llywelyn -1309 |
| Llywelyn | |
| D: | 1309 |
| Owain -1275 |
| Owain | |
| D: | 1275 |
| Maredudd Ap_Owain -1265 |
| Maredudd Ap_Owain | |
| D: | 1265 |
| Maelgwn Fychan -1257 |
| Maelgwn Fychan | |
| D: | 1257 |
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