Gruffydd ap Llewelyn 
Gruffydd ap's father was Llewelyn I Fawr ap Iorwerth , Prince\Wales and his mother is Tangwystl verch Llywarch. He had a sister named Gwladys verch. He had a half-brother and three half-sisters, named Dafydd II ap, Elen verch, Margaret verch and Helen Verch.
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