Im not sure who hosted it but your right it was the Basgue they refered to, sorry. I dare say there has been a lot of imigration to and from there over the last thousand or so years but it would have been over a thousand years ago these people came to ireland and not including the last ten years there has been little or no immigrants landing on our shores. well apart from those Turks that came ashore down in the South of the country back in the late 19th century and kidnapped a load of culchie and sold them in to slavery back home, funny bunch. Here is an interesting article....     If you are interested in this subject, I suggest you check out the books,  The Origins of the British - A Genetic Detective Story  by professional geneticist  Stephen Oppenheimer ,  and  Blood of the Isles  (published in the United States and Canada as  Saxons, Vikings and Celts: The Genetic Roots of Britain and Ireland)  by   Brian Sykes(professor of human genetics at Oxford) ,  they are both quite interesting.     Myths of British Ancestry   http://www.prospect-magazine.co.uk/a...ls.php?id=7817     new evidence from genetic analysis (see note below) indicates that the Anglo-Saxons and Celts, to the extent that they can be defined genetically, were both small immigrant minorities. Neither group had much more impact on the British Isles gene pool than the Vikings, the Normans or, indeed, immigrants of the past 50 years.     The genetic evidence shows that three quarters of our ancestors came to this corner of Europe as hunter-gatherers, between 15,000 and 7,500 years ago, after the melting of the ice caps but before the land broke away from the mainland and divided into islands. Our subsequent separation from Europe has preserved a genetic time capsule of southwestern Europe during the ice age,  which we share most closely with the former ice-age refuge in the Basque country . The first settlers were unlikely to have spoken a Celtic language but possibly a tongue related to the unique Basque language.      Given the distribution of Celtic languages in southwest Europe, it is most likely that they were spread by a wave of agriculturalists who dispersed  7,000 years ago from Anatolia, travelling along the north coast of the Mediterranean to Italy, France, Spain and then up the Atlantic coast to the British Isles . There is a dated archaeological trail for this. My genetic analysis shows exact counterparts for this trail both in the male Y chromosome and the maternally transmitted mitochondrial DNA right up to Cornwall, Wales, Ireland and the English south coast.     Further evidence for the Mediterranean origins of Celtic invaders is preserved in medieval Gaelic literature. According to the orthodox academic view of iron-age Celtic invasions from central Europe, Celtic cultural history should start in the British Isles no earlier than 300 BC. Yet  Irish legend tells us that all six of the cycles of invasion came from the Mediterranean via Spain , during the late Neolithic to bronze age, and were completed 3,700 years ago.     So,  based on the overall genetic perspective of the British, it seems that Celts, Belgians, Angles, Jutes, Saxons, Vikings and Normans were all immigrant minorities compared with the Basque pioneers,  who first ventured into the empty, chilly lands so recently vacated by the great ice sheets.