Nielsen Hayden genealogy
Descendants of Thomas ap Llewellyn ab Owain ap Maredudd
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Father: Llywelyn ab Owain ap Maredudd ab Owain
(of Cedewain, Powys, Wales - 1309)
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Thomas ap Llewellyn ab Owain ap Maredudd (of Iscoed, Ceredigion, Wales - 1343)
       
Margred ferch Dafydd Vychan
(of Trefeilir in Malltraeth, Anglesey, Wales - ??)
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           └─ Owen ap Maredudd ap Tudur
(Abt 1400 - 4 Feb 1461 Hereford, Herefordshire, England) =>
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            + Catherine of Valois, Queen Consort of England
(27 Oct 1401 Hotel de St. Pol, Paris, France -
            3 Jan 1437 Bermondsey Priory, Surrey, England)(m. Between 1429 and 1430)
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            3 Jan 1437 Bermondsey Priory, Surrey, England)(m. Between 1429 and 1430)