Conaing mac Amalgado (died 742) was a King of Brega from the Uí Chonaing sept of Cnogba (Knowth) of the Síl nÁedo Sláine branch of the southern Ui Neill.
He was the son of Amalgaid mac Congalaig (died 718), a previous king.
Conaing's father Amalgaid had been slain in the Battle of Cenannas (near Kells) versus Conall Grant mac Cernaig (died 718) of the rival sept.[2] The annals record the killing of Cathal mac Néill of the Uí Chernaig in 729 but do not mention the circumstances.
[3] In 737 the Battle of Lía Ailbe in Mag nAilbe (Moynalvy, Co. Meath) was fought between the two septs, Conaing was victorious and Cathal mac Áeda and Cernach mac Fogartaig of the rival sept were defeated with Cathal slain.
The Annals of Tigernach claim the deed was done by the high king Áed Allán (died 743) of the Cenél nEógain.