5 Facts About Ireland 🇮🇪 🎥 @theirishrose.ie . 1. The National Flag was first flown in Waterford city on the 7th of March 1848 by Irish American Thomas Francis Meagher. . 2. Croaghaun are the Highest Cliffs in Ireland standing at 688m. Sliabh Liag is commonly mistaken as the highest in Ireland, but they are only 601m. . 3. Ireland has 3 patron saints - St Brigid, St Patrick and St Colmcille. . 4. Hurling is the fast field sport in the world - it is one of Irelands Gaelic Games and is played us