Diarmait mac Áedo Sláine

Diarmait killed Conall Guthbinn mac Suibni "in the house of Nad-Fraích's son" according to the Annals of Ulster, in 635.

That same year Diarmait defeated Clann Cholmáin Bicc in battle at Cúil Caeláin where Óengus mac Colmáin's son Máel Umai was killed.

At this time the High Kingship of Ireland may have been disputed between Domnall mac Áedo of the northern Cenél Conaill branch of the Uí Néill and the cruithne king Congal Cáech.

Some branches of the Uí Néill fought against Domnall and Diarmait's foster-father Lommainnech is said to have killed Conall mac Suibni's son Airmedach in the battle.

The Baile Chuind omits several kings, including Áed Sláine, some of which may be copying errors, but others are apparently deliberate.

It is a work of dynastic propaganda, its purpose to demonstrate that the Síl nÁedo Sláine should by right be High Kings of Ireland.

For editors and creators of Middle Irish language literature, the reign of Diarmait and Blathmac was imagined as a Golden Age.