Nielsen Hayden genealogy
Ancestors of Gwrgeneu ap Trahaearn ab Ithel ab Einudd
┌── Einudd ap Morien ap Morgeneu ab Elystan ap Gwaithfoed (Abt 1070 of Dyffryn Clwdd,
│ Denbighshire, Wales - ??)
│ Denbighshire, Wales - ??)
┌── Ithel ab Einudd ap Morien ap Morgeneu (Abt 1100 - ??)
│ │ ┌── Llywelyn Eurdorchog ap Coel ap Gweirydd (Abt 1030 - ??)
│ │ ┌── Rhys ap Llywelyn Eurdorchog
│ │ │ │ ┌── Bleddyn ap Cynfyn, King of Gwynedd & Powys ( - 1075) =>
│ │ │ └── Efa ferch Bleddyn ap Cynfyn
│ │ │ └── (Unknown wife of Bleddyn ap Cynfyn)
│ │ │
│