April - Launch of O'Doherty's Rebellion. Following the Flight of the Earls and angered by land confiscations for the plantation of Ulster, Sir Cahir O'Doherty, Lord of Inishowen, sacks and burns Derry and Cahir's foster-father Felim Riabhach McDavitt kills the Governor, Sir George Paulet.
July 5 - Cahir O'Doherty is shot dead at the Battle of Kilmacrennan, a skirmish with an English force under Sir Richard Wingfield. His severed head is displayed in Dublin for some time afterwards. The surviving rebels retreat to be besieged on Tory Island
County Longford is transferred from Connacht to Leinster, has its boundaries defined and is divided into six baronies.
At about this date, Randal MacDonnell establishes a model town around Dunluce Castle.
Original license to distil whiskey granted to the Old Bushmills Distillery by King James I.
Probable date - William Tirry, priest (d. 1654)
April 19 - Sir George Paulet, English soldier and Governor of Derry (b. 1553)
April 23 - Edmund FitzGibbon, The White Knight (b. 1552?)
July 5 - Sir Cahir O'Doherty, last Gaelic Lord of Inishowen and rebel leader (b. 1587)
1608 in Ireland Wikipedia
Events from the year 1608 in Ireland.