Nielsen Hayden genealogy
Descendants of Gronwy ab Ednyfed Fychan ap Cynwrig ab Iorwerth
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Father: Ednyfed Fychan ap Cynwrig ab Iorwerth ap Gwgon
( - 1246)
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Mother: Gwenllian ferch Yr Arglwydd Rhys
( - 1236)
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Gronwy ab Ednyfed Fychan ap Cynwrig ab Iorwerth (of Trecasteil, Anglesey, Wales - 1268)
   
Angharad ferch Ithel Fychan ab Ithel Gam ap Hen Ithel Gam ap Maredudd ab Uchdrud ab Edwin
(of Tegeingl, Wales -
    ??)
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    ??)
       └─ Gronwy ap Tydyr HĂȘn ap Gronwy
(of Penmynydd, Anglesey, Wales - 1331 bur.Bangor, Gwynedd, Wales)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
       
Gwerfyl ferch Madog
(of Hendwr in Edeirnion, Merionethshire, Wales - Aft 1293)
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           └─ Tudur ap Gronwy
( - 1367 Trecasteil, Anglesey, Wales) =>
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
            + Margred ferch Thomas
(of Iscoed, Ceredigion, Wales - ??)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)