Iefan ab Owain Gwynedd was a son of Owain Gwynedd (the king of Gwynedd between 1137–1170) and his second wife Cristina ferch Gronw. He had a daughter named Gwenllian.
| Persondata | |
|---|---|
| Name | Iefan Ab Owain Gwynedd |
| Alternative names | |
| Short description | King of Gwynedd |
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