Nielsen Hayden genealogy
Descendants of Ithel Gam ap Hen Ithel Gam ap Maredudd ab Uchtrud
- Aft 1237Father: Hen Ithel Gam ap Maredudd ab Uchtrud ab Edwin (Abt 1130 - ??)
Ithel Gam ap Hen Ithel Gam ap Maredudd ab Uchtrud ( - Aft 1237)
   └─ Ithel Fychan ab Ithel Gam ap Hen Ithel Gam ap Maredudd (Abt 1230 - ??)
    Adles ferch Richard ap Cadwaladr ap Gruffudd ap Cynan
       └─ Angharad ferch Ithel Fychan ab Ithel Gam ap Hen Ithel Gam ap Maredudd ab Uchdrud ab Edwin (of Tegeingl,
        Wales - ??)
        Wales - ??)
        Tudur ap Gronwy ab Ednyfed Fychan ap Cynwrig ( - 1311)
           └─ Gronwy ap Tydyr HĂȘn ap Gronwy (of Penmynydd, Anglesey, Wales - 1331 bur.Bangor, Gwynedd, Wales) =>
            + Gwerfyl ferch Madog (of Hendwr in Edeirnion, Merionethshire, Wales - Aft 1293)