The UàNéill (; meaning "descendants of Niall") are Irish dynasties that claim descent from Niall NoÃÂgÃÂallach (Niall of the Nine Hostages), a historical King of Tara who is believed to have died around c. 405. They are generally divided into the Northern and Southern UàNéill.
The founders of the UàNéill branches are the alleged sons of Niall Noigiallach, seven in all:
The Northern UàNéill branch:
The Southern UàNéill branch:
All these men were in their lifetime known as members of Connachta dynasty, or as "the sons of Niall." The term UàNéill did not, by its very nature, come into use until the time of Niall's grandsons and great-grandsons.
Dynasties descended from the UàNéill, such as the Cenél Conaill and Cenél nEógain, held power in Ulster until their defeat in the Nine Years War in 1603. Many of the heads of the families left for Catholic Europe in 1607, an event known as the Flight of the Earls.
Bold indicates a supposed High King of Ireland.