British Isles DNA by County
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DNA Results
Important note to members on entering geographical information for most distant known ancestors.
For those interested in British ethnohistory, a terrific resource is available on the ISOGG website, compliments of John Eckersley. It consists of a table showing the principal ethnic groups that contributed to the DNA of the counties of the British Isles throughout history, from the time of the ancient Britons (Celts) to the post-Norman conquest period.
mtDNA
The mtDNA results table shows profiles of British Isles project members who tested their mtDNA. For an explanation of the tests involved, see mtDNA Tests or the Tutorial at FTDNA, and the DNA Tutorial on the Clan Campbell page. A comprehensive listing of mtDNA projects and can be found on the World Families Network at mtDNA - The Family of Woman. Another helpful resource for mtDNA is Charles Kerchner's page on mtDNA Haplogroup Descriptions and Links.
Y-DNA by County
This table shows members' profiles grouped by county in the British Isles. County groups are coloured to reflect coding of GENUKI's county maps of Great Britain and Ireland. Haplogroups printed in green have been confirmed by SNP testing. Haplogroups in red have been predicted by Family Tree DNA based on unambiguous results in the individual's personal page. For predicted results there is no reason to order an SNP test to confirm the Haplogroup. However, a "–" in the HAPLO field signifies that the comparative results are not clear and unambiguous. An SNP confirmation test may be ordered to determine the haplogroup with 100% confidence. Unassigned members are those who do not have documented ancestors in the British Isles. For a clarification of Y-DNA test results and their interpretation, see the FTDNA pages on Reading and Comparing Results, and on Interpreting Genetic Distance from 12-Marker, 25-Marker, and 37-Marker YDNA tests. Persons interested in the technical details behind the concept of genetic distance may wish to consult the Computing Genetic Distance page and the Time to Most Recent Common Ancestor Calculator at University of Arizona.
Y-DNA Haplogroups
These tables show recurring 12-marker Y-DNA haplogroups in the British Isles project. The markers are listed on the left, and the right hand table indicates the number of times the haplogroup appears among the entire project membership. Correlations of haplogroup and geographical location may suggest a common origin, even though it may not be possible by means of documentary research to establish a common ancestor. Matches on a significant number of higher numbers of markers might confirm a common origin. Wikipedia has a very comprehensive article on human Y-DNA haplogroups.
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