Nielsen Hayden genealogy
Descendants of Tangwystl
Tangwystl
Llywelyn Fawr ap Iorwerth (Abt 1173 - 11 Apr 1240 Aberconwy Abbey, Conwy, Wales)
   └─ Grufudd ap Llywelyn ab Iorwerth Drwyndwn ab Owain Gwybnedd ( - 1 Mar 1244 Tower of London, London, England)
    Senena ferch Caradog
       └─ Dafydd III ap Gruffudd ap Llywelyn ab Iorwerth, Prince of North Wales ( - 3 Oct 1283 Shrewsbury,
        Shropshire, England)
        Shropshire, England)
        (Unknown mistress of Dafydd III)
           └─ Dafydd Goch ap Dafydd ap Gruffudd ap Llywelyn (Abt 1270 - ??) =>
            +