The Haplogroup R1b3* (YCC 2002 nomenclature), R1b1b2g* (YCC 2008 nomenclature) is of interest to this DNA project. The asterisk designates that "branch-defining markers below the haplogroup have been tested but proved negative". This per DNA Heritage's SNP report. In 2017 usage, this group is now R-M269, per SNPedia.
It would appear R1b3's were in the Iberian refuge area during the Last Glacial Maximum. As the ice melted, these people moved up the Atlantic Coast, into France and the British Isles.
On the internet, discussions can be found on Wikipedia, SNPedia and Eupedia. Hopefully in the future there will be more specific discussions on the above haplogroup. There are discussions about R1b1b2, but none on R1b1b2g's.
The Ancestry.com company has this to say about R1b1b2g, The Artisans: "Your ancient ancestral haplogroup is R1b1b2g. This result means you're a subgroup of R1b, and we've provided you with that ancestral story. Because R1b was a predecessor to your group, the majority of this story applies to you as well.
"Ancient Ancestry haplogroup R1b, the Artisans, first arrived in Europe from west Asia about 35,000-40,000 years ago at the dawning of the Aurignacian culture. This culture was remarkable for its subtle yet significant technological progress, like the shift from random flint collection to the use of a single stone core to shape flint tools as needed. Aurignacian decorative beads and jewelry could also be the first sign we have of the uniquely human quality of self-awareness and adornment. Additionally, some anthropologists believe that the Aurignacian culture was the first to paint. Either way, the people of this time period left behind fascinating cave paintings in France, Spain and Portugal."
Interestingly, the Andrews62 DYS 390 was 23, a deviation from the AMH average. So this DNA study is focusing on the 390=23 databases.
The Suffolk, England test kit #107131 on Family Tree's Andrews DNA Project (see LINKS) has enough similarities to Andrews62 data, which implies that it is likely that Andrews62 unknown ancestors also came from the British Isles.
Then consider the DNA data of Y-Search sample ZEQWY. The oldest ancestor is William H. Andrews, born ~1811 in Georgetown, District of Columbia, USA. In comparing William to Andrews62, William has two (2) additional deviations from average, and Andrews62 has one (1). It is estimated that it would take a deviation about 200 years to occur (assuming four (4) male generations per 100 years). Thus for 1-2 deviations to occur would take 200-400 years, subtracted from ~1940, gives the ~1500 to ~1700 time period for a Most Recent Common Ancestor.
An article in Scientific American says that recent archeological finds suggest that a small surviving population, almost 200,000 years ago, gave rise to all humans alive today.
The Andrews "average" DNA fits the Atlantic modal haplotype (AMH), as shown on www.dnaheritage.com, in its Master Class tutorial. This is: DYS 19=14, 388=12, 390=24, 391=11, 392=13 and 393=13. Also DYS 389i=13, and 389ii=29.
In the past, it was recommended that pairs, i.e. 385 a & b, not be used in the consideration of a common ancestor, in that DNA pairs were problematic. Thus they have been left out of the Andrews "average".
A list of the various DYS markers can be found on Wikipedia.