1643 in Ireland

Events from the year 1643 in Ireland.

Incumbent

March 18 – Irish Confederate Wars: Battle of New Ross: James Butler, Earl of Ormonde, defeats Thomas Preston and a numerically superior Irish Confederate army north of the town of New Ross.
June 4 – Confederate Wars: Battle of Funcheon Ford: Catholic Confederation commander James Tuchet, 3rd Earl of Castlehaven's horsemen surprise and rout hundreds of Baron Inchiquin's men near Castlelyons in County Cork.{{cite book|author-link=Richard Bagwell|first=Richard|last=Bagwell|chapter=O'Brien, Murrough (1614–1674)|title=Dictionary of National Biography|chapter-url=https://archive.org/stream/dictionaryofnati41stepuoft#page/320/mode/2up|location=London|publisher=Smith, Elder|volume=XVI|page=321}} Cites Castlehaven's Memoirs, p. 40.{{cite book|last=Smith|first=Charles|year=1815|title=The Ancient and Present State of the County and City of Cork|url=https://books.google.com/books?id=4z9IAAAAMAAJ&q=Castlelyons%20on%204%20June&pg=PA146|volume=III|pages=146–8}}{{cite web|title=Battles of the Eleven Years War|url=http://inchiquin.blogspot.co.uk/2008/09/battles-of-eleven-years-war.html|work=Inchiquin|access-date=2012-07-10}}
September – Confederate Wars: "Cessation" (i.e. ceasefire) arranged by Ormond places the greater part of Ireland into the hands of the Catholic Confederation.
An Calbhach mac Aedh Ó Conchobhair Donn, The Ó Conchubhair Donn, Chief of the Name of the Clan Ó Conchubhair, is popularly inaugurated as King.