Nielsen Hayden genealogy
Descendants of Maredudd ab Uchtrud ab Edwin ap Gronwy
Abt 1100 -Father: Uchdrud ab Edwin ap Gronwy (Abt 1030 - ??)
Maredudd ab Uchtrud ab Edwin ap Gronwy (Abt 1100 - ??)
   └─ Hen Ithel Gam ap Maredudd ab Uchtrud ab Edwin (Abt 1130 - ??)
   
       └─ Ithel Gam ap Hen Ithel Gam ap Maredudd ab Uchtrud ( - Aft 1237)
        Tibod ferch Rhirid ab Iorwerth ap Madog ap Ednywain Bendew II
           └─ Ithel Fychan ab Ithel Gam ap Hen Ithel Gam ap Maredudd (Abt 1230 - ??) =>
            + Adles ferch Richard ap Cadwaladr ap Gruffudd ap Cynan