Flaithnia mac Flainn
Flaithnia mac Flainn was a king of the Uí Failge, a Laigin people of County Offaly. He was one of the many sons of Fland Dá Chongal, a previous king. He ruled from 741 to 755.
His predecessor and half-brother Ailill Corrach mac Flainn was killed... Wikipedia