Ainbíth mac Áedo
Ainbíth mac Áedo was a Dál Fiatach king of Ulaid, which is now Ulster, Ireland. He was the grandson of Eochaid mac Fiachnai, a previous king of Ulaid. He ruled from 873–882.
His father was Áed mac Eochada who killed his own brother Muiredach mac Eochada, King of Ulaid. However Áed was killed that same year by his nephew, Matudán mac Muiredaig who became King of Ulaid. Matudán was succeeded by a member of the rival Dal nAraide sept, Lethlobar mac Loingsig. Ainbíth may have been recognized as heir for we find him commanding the forces of Ulaid in 864. In that year the high king Áed Findliath of the northern Ui Neill and his ally Flann mac Conaing of Brega inflicted a heavy defeat on the Ulaid.
Ainbíth became king in 873 upon the death of the aged Lethlobar and the annals record that he waged war with his neighbors. In 878 the Ulaid killed Cummascach mac Muiredaig, King of the Uí Cremthainn. In 882 the Ualid fought a skirmish with the Conaille Muirtheimne. Ainbíth was slain along with his ally Conallán mac Máele Dúin, king of Coba.
His son Fiachnae mac Ainbítha was also a King of Ulaid.
