Nielsen Hayden genealogy
Descendants of Margred ferch Thomas
Father: Thomas ap Llewellyn ab Owain ap Maredudd (of Iscoed, Ceredigion, Wales - 1343)
Mother: Elinor ferch Maredudd
Margred ferch Thomas (of Iscoed, Ceredigion, Wales - ??)
Tudur ap Gronwy ( - 1367 Trecasteil, Anglesey, Wales)
   └─ Maredudd ap Tudur ( - Aft 1406)
    Margred ferch Dafydd Vychan (of Trefeilir in Malltraeth, Anglesey, Wales - ??)
       └─ Owen ap Maredudd ap Tudur (Abt 1400 - 4 Feb 1461 Hereford, Herefordshire, England)
        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)
        3 Jan 1437 Bermondsey Priory, Surrey, England)(m. Between 1429 and 1430)
           ├─ Edmund Tudor (Abt 1430 Much Hadham, Hertfordshire, England -
           │ 3 Nov 1456 Carmarthen, Carmarthenshire, Wales) =>
           │ 3 Nov 1456 Carmarthen, Carmarthenshire, Wales) =>
           │ + Margaret Beaufort (31 May 1443 Bletsoe, Bedfordshire, England -
           │ 29 Jun 1509 Westminster, Middlesex, England)(m. 1455)
           │ 29 Jun 1509 Westminster, Middlesex, England)(m. 1455)
           └─ Jasper Tudor (Abt 1431 Hatfield, Hertfordshire, England -
            21 Dec 1495 bur.Keynsham Abbey near Bristol, Gloucestershire, England)
            21 Dec 1495 bur.Keynsham Abbey near Bristol, Gloucestershire, England)
            + Katherine Woodville (Abt 1458 - 18 May 1497)(m. Bef 7 Nov 1485)