Ireland By KarlijnEummelen 500 BCE Arrival Celts 385 Birth of Patron Saint Patrick 460 Death Patron Saint Patrick Jan 1, 610 Saint Finbarr Founded Cork Nov 29, 795 First raidings by Vikings on Rathlin Island Nov 29, 800 Creation Book of Kells Nov 29, 812 Limerick settled Nov 29, 920 Cork became urban after Trading Port of the Vikings Nov 29, 988 Vikings settled in Dublin Nov 29, 997 1ST Irish pound Nov 29, 1759 Guinness' Brewery Period: Jan 1, 1845 to Dec 31, 1852 Irish Potato Famine Nov 29, 1848 Irish Flag Period: Nov 29, 1919 to Nov 30, 1921 Irish War of Independence Nov 29, 1922 Harp adopted as the Emblem of the Irish Free State Nov 29, 1923 2ND Irish pound Nov 29, 2002 Euro in Ireland, Harp on the 1 Euro coin