Cenn Fáelad mac Ailella
Cenn Fáelad mac Ailella (alias Cennfaeladh; died 679) was an early medieval Irish scholar renowned for his powerful memory and potential eidetic memory, an unintended consequence of a head wound in battle. == Ancestry == He was a member of the Cenél nEógain, being a grandson of King Báetán mac Muirchertaig (King of Cenél nEógain), a great-great-great-great grandson of Niall Noígiallach, and a first cousin once removed of Aldfrith of Northumbria via his first cousin, Fina.