Linking early and modern Irish names, dates and y-chromosome mutations

Over thast decade and more a number of groups and indiiduals have been trying to find relationships between Irish surnames and haplogroups. One that caught the imagination of the press was the alleged link between the semi-mythological Niall of Nine Hostages and R-S222 haplogroup.

Over the years SNP names have chaged: using R-M222, for example, we have (what I started with) R1b1ba2a1a2c1a1a1a1 (isogg haplogroup) or R1b1a2a1a1b4b (y-haplogroup); also Rs20321 and M222 is equivalent to PAGE S00064 or Page84 and we have the y chromosome positions: with GRCh37 it is y:127902414 and with the newer (generally the current) hg38/GRCh30 y:12790481. All have the mutation G>A (G being the Ancestral allele and the A variant is Derived).

The y-chromosome has (currently) 57227415 locations each of which has an ancestral value (ATCG) and the FTDNA genetics company has the world's largest y chromosome database of over 600,000 named variants - (called a SNP if present in 1% plus of population). SNP = single nucleotide polymorphism, pronounced "snip".

The table below gives current speculative dates with names and haplogroup tree markers from R-M222 to possible a current R-F17047. Hopefully, this table will be updated as more related men are tested.

The graphic below gives my Open Sourced FTDNA Cenel Eoghainy DNA Project image. A similar one is produced for everyone who takes an FTDNA Big Y test and joins (free) a relevant FTDNA Group. I have added extra text to the (my) original using data from the Dal Cuinn Group together with some of my own words.

 

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