1491 in Ireland

• Lord: Henry VII

• Summer/autumn – continuous rainfall causes the grain crops to fail throughout Ireland, leading to this being called the "dismal year".{{cite book|url=http://www.corkpastandpresent.ie/history/tuckeyscorkremembrancer/corkremembrancer/pages38_79pdf.pdf|title=Cork Remembrancer|page=38|format=PDF}}
• November – pretender to the English throne Perkin Warbeck arrives in Cork.{{cite book|editor1=Moody, T. W. |editor2=Martin, F. X. |year=1967|title=The Course of Irish History|publisher=Mercier Press|location=Cork|page=370}} He wins some support for his cause from James FitzGerald, 8th Earl of Desmond, but Henry VII of England sends James Ormonde with troops to defend the territory and suspends Desmond's cousin, Gerald Mór FitzGerald, 8th Earl of Kildare, from his office of Deputy Lieutenant of Ireland for being implicated.{{cite web|first=Steven G.|last=Ellis|title=Fitzgerald, Gerald, eighth earl of Kildare (1456?–1513)|work=Oxford Dictionary of National Biography|publisher=Oxford University Press|year=2004|url=http://www.oxforddnb.com/view/article/9554|access-date=2012-03-08|doi=10.1093/ref:odnb/9554}} {{ODNBsub}}

• June 28 – Henry VIII, King of Ireland (d. 1547)

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{{Years in Ireland}}

{{Year in Europe|1491}}

Category:1490s in Ireland

Ireland

Category:Years of the 15th century in Ireland