Conall Grant

Conall Grant mac Cernaig (died 718) was a King of Brega of the Uí Chernaig sept of Lagore of the Síl nÁedo Sláine. He was the grandson of the high king Diarmait mac Áedo Sláine (died 665). His father Cernach Sotal had died during plague years in 664. His byname Grant meant "Grey-haired"

In his time there was a rivalry between the northern septs of the Síl nÁedo Sláine, including the Uí Chonaing sept of Cnogba (Knowth) and the Síl nDlúthaig of Fir Cúl, with the southern sept of the Uí Chernaig. Conall's brother Niall mac Cernaig Sotal had been killed by the Uí Chonaing king of Brega, Írgalach mac Conaing Cuirre (died 702) The kingship of Brega at this time was in rivalry between the septs. Two contemporaries were also considered kings of Brega around this time, Amalgaid mac Congalaig (died 718) of the Uí Chonaing, and Conall Grant's nephew, Fogartach mac Néill (died 724).

Conall is among the guarantors of the Cáin Adomnáin (Law of Innocents) proclaimed at the Synod of Birr in 697 where he is given the title King of Deiscirt Breg or southern Brega. These titles were added to the list of guarantors in 727 and the first use of the title King of South Brega in the Annals of Ulster is not until 751

In 712 his nephew Maine mac Néill was slain in battle versus Flann mac Áedo (died 714) of the Síl nDlúthaig. In 714 his nephew Fogartach was deposed from th kingship and went to Britain possibly by the high king Fergal mac Máele Dúin (died 722) of the Cenél nEógain. Conall may have acquired the rule of Brega and in 715 he was responsible for the assassination of Murchad Midi, the King of Uisnech from the Clann Cholmáin, possibly the deputy of Fergal. His nephew Fogartach returned to the rule of Brega in 716.

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