Kalends of January first feria, twentieth of the moon. AD 589.
Death of Feidlimid son of Tigernach, king of Mumu.
The battle of Lethreid won by Aedán son of Gabrán.
The battle of Mag Ochtair won by Brandub son of Eochu over the Uí Néill.
Or this year, the repose of Fergus, bishop of Druim Lethglaise, who founded Cell Biain.