books.google.com - From the best-selling author of The Seven Daughters of Eve, a perfect book for anyone interested in the genetic history of Britain, Ireland, and America. One of the world's leading geneticists, Bryan Sykes has helped thousands find their ancestry in the British Isles. Saxons, Vikings, and Celts, which...https://books.google.com/books/about/Saxons_Vikings_and_Celts_The_Genetic_Roo.html?id=ZWJlqIWRjiEC&q=D%C3%A1l+Riata&utm_source=gb-gplus-shareSaxons, Vikings, and Celts: The Genetic Roots of Britain and Ireland
