Family: Cynog Mawr ap Iowerth (F5107)
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 | Iorwerth Hirflawdd ap Tegonwy (765- )
|
 | Arianwen ferch Brychan (775- ) |
| Idnerth ap Iorwerth (795- )  |
| Cynog Mawr ap Iowerth (810- )
|
| Bledrys ap Cynog (850- ) |