Nielsen Hayden genealogy
Ancestors of Angharad ferch Maredudd
┌── Rhodri Mawr, King of Gwynedd ( - 878) =>
┌── Cadell ap Rhodri, King of South Wales ( - 910)
┌── Hywell Dda ap Cadell, King of South Wales (Abt 875 - 950)
┌── Owain ap Hywel Dda, King of Deheubarth ( - 988)
│ │ ┌── Hyfaidd ap Bleiddig, King of Dyfed ( - 893) =>
│ │ ┌── Llywarch ap Hyfaidd ( - 904)
│ └── Elen ferch Llywarch ( - 929)
│
┌── Maredudd ap Owain ( - 999)