Nielsen Hayden genealogy
Descendants of Aliz de Clara
Aliz de Clara
Cadwaladr ap Gruffudd ap Cynan, King in Wales ( - 1172 bur.Bangor Cathedral, Bangor, Gwynedd, Wales)(m. Bef 1151)
   └─ Richard ap Cadwaladr ap Gruffudd ap Cynan (Abt 1170 - ??)
    Annes ferch Gwyn Ddistain
       └─ Gwenllian ferch Richard ap Cadwaladr ap Gruffudd ap Cynan
        Einion ap Gwalchmai ap Meilir
            + Gruffudd ab Ednyfed Fychan ap Cynwrig ab Iorwerth ( - 1246)