Nielsen Hayden genealogy
Descendants of Gwenllian ferch Madog
- 1160Father: Madog ap Maredudd, Prince of Powys Fadog ( - 1160 Winchester, Hampshire, England)
Gwenllian ferch Madog ( - 1160)
Rhys ap Gruffydd, King of Deheubarth (Abt 1132 -
24 Apr 1197 bur.St Davids Cathedral, St. Davids, Pembrokeshire, Wales)
24 Apr 1197 bur.St Davids Cathedral, St. Davids, Pembrokeshire, Wales)
   ├─ Gwenllian ferch Yr Arglwydd Rhys ( - 1236)
   │ Ednyfed Fychan ap Cynwrig ab Iorwerth ap Gwgon ( - 1246)
   │    ├─ Gronwy ab Ednyfed Fychan ap Cynwrig ab Iorwerth (of Trecasteil, Anglesey, Wales - 1268)
   │    │ Morfudd ferch Meurig (of Gwent, Wales - ??)
   │    │    └─ Tudur ap Gronwy ab Ednyfed Fychan ap Cynwrig ( - 1311) =>
   │    │     + Angharad ferch Ithel Fychan ab Ithel Gam ap Hen Ithel Gam ap Maredudd ab Uchdrud ab Edwin
   │    │     (of Tegeingl, Wales - ??)
   │    │     (of Tegeingl, Wales - ??)
   │    ├─ Gwenllian ferch Ednyfed Fychan
   │    │ Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd (Abt 1200 - ??)
   │    │    └─ Angharad ferch Tegwared y Baiswen ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd =>
   │    │     + Gruffudd ap Hywel ap Maredudd ab Einion (Abt 1270 - ??)
   │    └─ Gruffudd ab Ednyfed Fychan ap Cynwrig ab Iorwerth ( - 1246)
   │     Margred ferch Einion ap Gwalchmai
   │         + Hywel ap Maredudd ab Einion ap Caradog (Abt 1230 - ??)
   └─ Gruffudd ab Yr Arglwydd Rhys ( - 25 Jul 1201 Strata Florida Abbey, Ceredigion, Wales)
    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)
        (Unknown daughter of Gwion Sais)
           └─ Maredudd ab Owain ap Gruffudd ab Yr Arglwydd Rhys ( - Mar 1265 Llanbardarn Fawr, Ceredigion,
            Wales) =>
            Wales) =>
            + (Unknown daughter of Thomas ap Rhodri)