The R-L371 group's purpose is to advance understanding of this rare Y-DNA R1b SNP found in men having Welsh ancestry.
This Y-SNP is also known as: R1b1a2a1a2c1h at ISOGG; R1b1a2a1a1b3a8 at FTDNA; R1b1b2a1a2f* at 23andme; R1b-L371; L371; S300; Y-Position 18656470 (NCBI37); R-17-14-10. The mutation was T>G.
Surname and lineages include: Griffith, Jones, Jenkins, Thomas, Davis, etc.
R-L371 had a recent genesis in NW Wales 1000 years ago and is found now in male descendants living in Wales, England, USA, Australia, Canada, Ireland, etc.
R-L371 males descend from ancestor / older "R1b" Haplogroups (YBP = Years Before Present):
R-M269 / S3 / R1b1a2 ~4800 YBP
R-L11 / S127~4500 YBP
R-P312 / S116~3700 YBP
R-L21 / S145~3600 YBP
R-DF13 / S521~3400 YBP
R-L371 / S300~1000 YBP 2013 Terminal Y-SNP
About .1% (1 in 1,000) of Y-DNA tested men in the U.S. are R-L371. In certain NW Wales ancestral areas, this percentage could be well over 1% (10 in 1,000).
The R-L371 "Adam" was likely born in geographically isolated Northwest Wales (perhaps Meirionnydd in Gwynedd county or Anglesey county). This area of NW Wales is also a Welsh homeland for the Griffith and Jones clans.
R-L371 men have a 3 part and rare Y-STR Signature: DYS448=17; DYS456=14; DYS450=10. DYS650=20 is a Griffith - Jones clan indicator.
Take a US$159 National Geographic Geno 2.0 DNA test for Y-DNA (incl R-L371), mt-DNA, Autosomal DNA at Geno 2.0. ("L371,Y,C,C" = L371+) If you are R-L371+ please share your FTDNA Big "Y" or Full Genomes results with us. Please email RL371firstname.lastname@example.org for more details.
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