Note 593 — Chapter VIII · THE KINGDOM OF SCOTIA.
Reading edition
Marianus has in 1057 ‘Macfinlaeg occiditur in Augusto;’ and again, ‘Inde Macfinlaeg regnavit annis 17 ad eandem missam Sanctæ Mariæ’ (15th August). Tighernac under 1057: Macbethadh mic Findlaich Airdri (sovereign of) Alban domarbad do (slain by) Maelcolaim mic Dondcadha, to which the Ulster Annals add ‘i cath’ (in battle).—Chron. Picts and Scots, pp. 65, 78, 369.
Marianus and Tighernac are contemporary authorities. The later chronicles add that he was slain in Lumfanan.