Family: Llywarch Ap Trahaiarn / Dyddgu Verch Idnerth (F2884)
Trahaern Ap Caradawg (1044-1081) |
Nesta (1046- ) |
Idnerth Ap Cadwgan (1020- ) 
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| Gwenllian Verch Aaron (1026- )
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| Llywarch Ap Trahaiarn (1070-1128)
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| Dyddgu Verch Idnerth (1060- )
|
Gladys Verch Llywarch (1098- )  |