Here is a link to an interesting chart at the International Society of Genetic Genealogists (ISOGG) that purports to show the main DNA sources of the different counties of the British Isles. It was compiled by a man named John Eckersley.
Here is a link to an interesting chart at the International Society of Genetic Genealogists (ISOGG) that purports to show the main DNA sources of the different counties of the British Isles. It was compiled by a man named John Eckersley.