Argues that marginal notes were added to Easter tables in Ireland from the sixth century and that this practise was widespread by the mid-seventh century; the earliest Irish chronicle was compiled from these notes in the mid-eighth century.
Repr. in D. Ó Cróinín, Early Irish history and chronology, pp. 76-86.
Repr. in D. Ó Cróinín, Early Irish history and chronology, pp. 76-86.