Question: Who is Rhun Ab Owain Gwynedd's paternal grandfather?
Sentence (from "Iefan ab Owain Gwynedd"): Iefan ab Owain Gwynedd was a son of Owain Gwynedd( the king of Gwynedd between 1137 – 1170) and his second wife Cristina ferch Gronw.
Relevant evidence: No