Events from the 2nd century in Ireland.
100s 106 Battle of Moin An Chatha, in Magh Line, Dal Araidhe
140s 140 Greek astronomer and cartographer Ptolemy provided the earliest known reference to human habitation in the area now known as Dublin. In around 140 he referred to a settlement he called Eblana Civitas
150s 157 Battle of Tuath Amrois
Notes List of Published Texts at CELT — University College Cork's Corpus of Electronic Texts project has the full list of Irish Annals.