Nielsen Hayden genealogy
Descendants of Owain ap Gruffudd ab Yr Arglwydd Rhys
- 1236Father: Gruffudd ab Yr Arglwydd Rhys ( - 25 Jul 1201 Strata Florida Abbey, Ceredigion, Wales)
Mother: Matilda de Briouze ( - 29 Dec 1210 Llanbardarn Fawr, Ceredigion, Wales)
Owain ap Gruffudd ab Yr Arglwydd Rhys ( - 18 Jan 1236 Strata Florida Abbey, Ceredigion, Wales)
   └─ Maredudd ab Owain ap Gruffudd ab Yr Arglwydd Rhys ( - Mar 1265 Llanbardarn Fawr, Ceredigion, Wales)
    (Unknown daughter of Thomas ap Rhodri)
       └─ Owain ap Maredudd ab Owain ap Gruffudd (of Iscoed, Ceredigion, Wales -
        15 Aug 1275 bur.Strata Florida Abbey, Ceredigion, Wales)
        15 Aug 1275 bur.Strata Florida Abbey, Ceredigion, Wales)
       
           └─ Llywelyn ab Owain ap Maredudd ab Owain (of Cedewain, Powys, Wales - 1309)
           
               └─ Thomas ap Llewellyn ab Owain ap Maredudd (of Iscoed, Ceredigion, Wales - 1343)
                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) =>
                            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)
                            Paris, France - 3 Jan 1437 Bermondsey Priory, Surrey, England)(m. Between
                            1429 and 1430)