Family: DRWYNDWN, Iorwerth / MADOG, Marared ferch (F12800)
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 | GWYNEDD, Owain (1100-1170) |
 | MAREDUDD, Madog ap ( -1160) |
| DRWYNDWN, Iorwerth (1130-1174)
|
 | MADOG, Marared ferch (1130- )
|
 | IORWERTH, Llywelyn ap (1173-1240) |