Here is an interesting article on the research by Geneticist Peter Forster of the University of Cambridge in Britain who used techniques usually reserved for DNA to support the idea that farmers carried Celtic into the British Isles, Ireland and France in a single wave 6,000 years ago.
This new method of analysing language, uses a way of dating the migration of people, their origin using a technique called mutational analysis. The scientific study looks at the idea of a “genetic clock”, where random mutations or changes in DNA over time can be observed.