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Male Gronwy of Trecastell Click to view Gronwy of Trecastell in the family tree

Gronwy of was born in Trecastell, Llangoed, Anglesey, Wales.  Gronwy of's father was Gronwy of Arwystli and his mother was FNU verch Bledri.  His paternal grandfather was Llywarch ap Gwrgan. He had a sister named Joan verch.


Gronwy of's family with Catrin verch Madog

They had a son named Rhun ap.

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