795 - The first recorded Viking raid on Lambay Island off the coast of Co. Dublin.
807 - Monastery at Kells founded by monks fleeing Viking attacks on Iona, an island off the Western coast of Scotland.
1014 - The Battle of Clontarf fought by the forces of Brian Boru, High King of Ireland, against a Viking-Irish alliance. Brian's forces were victorious but Brian was killed.
1169 - Anglo-Norman mercenaries landed at Bannow Bay, Co. Wexford at the request of Dermot MacMurragh, the deposed King of Leinster. Dermot regains the Kingdom of Leinster.
1170 - Further Norman landings, led by the Anglo-Norman Earl of Pembroke, Richard de Clare, known as Strongbow. He seized the Norse-Irish cities of Waterford and Dublin. Strongbow marries Dermot's Aoífe.
May 1171 - Dermot dies suddenly and Strongbow declared himself king of Leinster.
Oct 1171 - King Henry II landed at Waterford with a large army. Strongbow was allowed hold Leinster in fief and Dublin, Wexford and Waterford were declared crown land.
1172 - Henry II granted Meath to Hugh de Lacy who made Trim the centre of Norman administration for the Lordship of Meath.
1348 to 1350 - The Black Death (bubonic plague) quickly spread through Irish towns and cities. It is estimated that 30% of the European population died from the plague.
1366 - Statute of Kilkenny, a set of laws which attempted to prevent the Anglo Norman (English) settlers adopting Irish ways.
Early Modern Ireland
1533 - Henry VIII split from Rome and declared himself head of the church in England and Ireland.
1534 to 1535 - Failed rebellion by Thomas FitzGerald, 10th Earl of Kildare also known as Silken Thomas.
1536 to 1540 - Dissolution of the monasteries, all religious establishments that were appropriated by the Crown.
1541 - Henry VIII of England upgraded Ireland from a lordship to a full Kingdom. Henry was proclaimed King of Ireland at a meeting of the Irish Parliament.
1601 - The defeat of the Gaelic chiefs Hugh O'Neill and Hugh Roe O'Donnell at the Battle of Kinsale.
1607 - The Flight of the Earls when Hugh O'Neill, Earl of Tyrone and Rory O'Donnell, 1st Earl of Tyrconnell, and about ninety followers left Ulster in Ireland for mainland Europe.
1641 - After a rebellion against Protestants, the Book of Kells was transferred to Trinity College in Dublin.
Protestant ascendancy (1691–1801)
1845 to 1850 - The Great Famine or the Great Hunger
Mass starvation, disease, and emigration.
1 million people died and another 1.5 million emigrated, mostly to North America.
Potato blight (phytophthora infestans) caused the failure of the potato crop which was the staple diet.
Greatest impact in the west and south of Ireland, where the Irish language was primarily spoken.
The worst year of the period was 1847 known as "Black 47".
1916 - The Easter Rising, the leaders are executed which shifts public opinion in favour of the rebels.
1919 to 1921 - Irish War of Independence, a guerrilla war between the Irish Republican Army and British forces.
6th December 1921 - Signing of the Treaty which establishment of the Irish Free State as a self-governing dominion covering 26 counties and for the 6 counties in Northern Ireland to remain in the United Kingdom.
Jun 1922 to May 1923 - Civil war out between the Free State Army and the Anti Treaty Republicans.
1949 – Ireland officially became a Republic on April 18th, leaving the British Commonwealth.
1969 - Civil Rights marches in Northern Ireland, British troops called in to keep order.
1972 - Republic of Ireland joins the European Community.
1998 - The 'Good Friday' agreement and the creation of a Northern Assembly.
Jan 2002 - Euro banknotes and coins as legal tender.