AT, Irish: Annála Tiarnaigh) are chronicles probably originating in Clonmacnoise, Ireland.
[1] The coverage of the period 766 to 973 is lost, but is thought to survive in abbreviated form in the Chronicon Scottorum (abbr.
[1] Kathleen Hughes postulates that AU and AT diverged from the Chronicle of Ireland sometime before the year 913.
[1] The chronicle owes its modern name to Tigernach Ua Braín (d. 1088), abbot of Clonmacnoise, but this does not mean that he was also its author.
[2] A note added to the entry for 1088, the year of his death, in Rawlinson B 488 states that the text was written by Tigernach up to that point.