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1133 in Ireland
Reference material by Wikipedia contributors. This retains its source identity and is not 411 news reporting.
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1133
January 2026
Events from the year 1133 in Ireland.
Incumbents
High King: Toirdelbach Ua Conchobair
Events
A major epidemic affecting cattle occurred, called maelgarbh (“cow mortality”), described as unprecedented since an earlier great mortality of cattle.
A raid on Ardbraccan occurred in this year.Ardbraccan – Meath History Hub with Noel French https://meathhistoryhub.ie/ardbraccan/ 14 January 2026 en-US
Deaths
Flaithbheartach Ua Flaithbheartaigh, killed by the son of Lochlainn Ua Lochlainn.Part 24 of Annals of the Four Masters https://celt.ucc.ie/published/T100005B/text024.html 14 January 2026 celt.ucc.ie
References
1133