Flann mac Áedo
Flann mac Áedo was a King of Fir Cúl in Brega of the Síl nDlúthaig sept of the Síl nÁedo Sláine of Brega. He was the son of Áed mac Dlúthaig, King of Fir Cúl and great-grandson of Ailill Cruitire mac Áedo Sláine, a king of Brega.
In his time a feud broke out among the Síl nÁedo Sláine between the Uí Chernaig sept of Lagore and the northern septs of Uí Chonaing of Cnogba and the Síl nDlúthaig of Fir Cúl. The Síl nDlúthaig also had a feud with the main Clann Cholmáin line of Uisnech in Mide. Flann's father Áed had killed Diarmait Dian mac Airmetaig Cáech, the King of Uisnech in 689.
In 711 the high king Fergal mac Máele Dúin of the Cenél nEógain defeated and slew Flann's brother Cú Raí mac Áedo at the Battle of Sliab Fúait along with the king of Uí Méith.
In 712 the feud among the Síl nÁedo Sláine was intensified when Flann defeated and slew Maine mac Néill of Uí Chernaig. In 714 Flann fought the Battle of Bile Tened. In the first encounter two brothers of Murchad were slain, but, in the second encounter, Flann himself was slain.
His brother Gormgal mac Áedo was slain in the Battle of Cenannas fighting for Amalgaid mac Congalaig of Uí Chonaing versus Conall Grant of the Uí Chernaig. His son Dúngal mac Flainn was King of Fir Cúl.
