- Rebellions inspired by United Irishmen.
- In August 1798 a French army lands in Killala to support the rebels.
- The 1798 Rebellion and French intervention end in total defeat, Wolfe Tone (now an officer in the French army) is captured, tried and was to be executed as a traitor (he chose suicide).
- The Irish parliament votes itself out of existence and the Act of Union establishes direct rule from Westminster.
- The young idealist Robert Emmet attempts another rising, it is suppressed immediately and Emmet is tried and executed.
- First coach service begins.
- Completion of Royal Canal.
- Daniel O'Connell founds and leads the Catholic Association.
- Daniel O'Connell is elected as MP for County Clare.
- Catholic emancipation begins.
- Father Matthew starts his "Temperance Crusade".
- O'Connell founds Repeal Association to dissolve the union with England.
- From 1843 onwards so-called "Monster Meetings" are held in support, one of the largest takes place on the Hill of Tara.
- A potato blight, encouraged by primitive farming methods and reliance on one crop, destroys the potato harvest and leads to the "Great Famine".
- Irish Republican Brotherhood (IRB) founded in Ireland, parallel to the foundation of the Fenian Brotherhood in the USA.
- First attempt at a Fenian Rising in Cork and Dublin, unsuccessful mainly due to atrocious weather.
- Three attempts of an "Irish Republican Army" to invade Canada (1866, 1870 and 1871) end in disaster.
- Disestablishment of the (Anglican) Church of Ireland.
