This subclade is defined by the presence of the marker U106, also known as S21 and M405. It appears to represent over 25% of R1b in Europe...In Europe, the subclade (including its own subclades) has a distribution running northwest to east and is found in higher concentrations in England (21.4%) and Scandinavia (Denmark 17.7%), reaches a maximum in the Netherlands (37.2%) and slopes down to the east through Germany (20.5%) and the Alps (Switzerland 13.3%, Austria 22.7%) towards the Czech Republic (13.9%) and Ukraine (9.4%). Towards North-Eastern Europe the concentration goes down to 8.2% in Poland and 7.2% in Russia. The subclade appears to be omnipresent in Europe, although it becomes less pronounced in Ireland (5.9%) and France (7.1%) and, further towards the Mediterranean, low values are measured in, Italy (3.5%), and Turkey (0.4%).[22] The frequency of this subclade remains unknown in certain parts of Europe such as Iberia and the Balkans. The age of U106 is around 3,100-3,900 years old. [1]
More recently it has been determined by one researcher that R-U106 has the highest variance in Ireland (it has a low percentage there) which indicates it may well have originated there or have reached Ireland very quickly after R-U106* emerged. Some currently identified sub-Clades of the Haplogroup (DYS 390=23 appears to be some form of indication) could well be linked to later Friesian or Saxon groups that invaded Britain, and much later migrated to Ireland as part of the various colonizations. [2]
At this point it is premature to draw firm conclusions specific to our participants in this haplogroup.
Resources
These participants should join the R1b1b2a1a*/U-106* project at FTDNA, and the R1b1b2a1a*/U106* mailing list at Yahoo! Groups. There are lots of useful files in the shared webspace area. The list members should be able to advise whether or not to order any additional SNPs. It would be best if you could list the SNPs which have been tested rather than the name of the clade. You'll find a full list of positive and negative SNPs tested on your haplotree page at FTDNA.
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1. Wikipedia subclade explanation.
2. Participant's feedback.