Friday, April 12, 2013

New member of the Blake y-DNA study

Another member of B  English Ancestry in the Blake yDNA study at FT DNA:

This is the only group that believes they may be descended from the Blake family located at Calne Wiltshire. Unfortunately, no member of the group has a paper trail ancestry back to the best known couple in this line prior to 1500 - Robert Blake and Avis Wallop. The known early history of the Blake family at Calne places Robert Blake (married to Alice Smith) with a fulling mill at Quemerford at the time of his death in 1515.Robert was a brother to John Blake who left his will in 1504 at Nether Wallop and blogged:

The descendants of the Robert Blake family form the largest grouping of known descendants of the Blake family at Calne. I have discussed during the blogging of the Wiltshire wills the possibility that the Blake families located in Erlestoke and other places are descendant of this Blake family but still lack definitive proof for all of these Blake lines in Wiltshire. I am hoping that the next set of Blake Wiltshire wills will help with that connection or deny it.

The I1 haplogroup to which they all belong has an interesting deep ancestry.  Three members have tested the subclade M253 and are positive for that single nucleotide polymorphism. Hence they belong to the group known as I-M253. To date I have not yet separated them out from the others. The haplogroup I-M253 is about 15,000 years old and is considered relatively ancient. Suggestion has been made that this haplogroup is of Danish origin but its frequency is highest throughout the Finish-Scandinavian-Denmark areas including along the coast of present day northern Germany.

I1 is the second largest grouping in the British Isles with about 20% of the male population. This also includes about 1% or less belonging to I2a2b (my paternal haplogroup) and  about 3% belonging to I2b1 with I1 being the largest portion of I haplogroup in the British Isles.

Are all the members of Group B related? The first three members N4695, 278940 and 225402 match 12/12 but two have not tested beyond 12 markers. The other three members match the first three somewhat. 87372 matches 10/12 and one of the markers is a fast moving marker so often found as valuable differentiators in family lines. However this individual has tested 37 markers and he differs from 225402 (who has also tested 37 markers) by 6 markers which may or may not be significant. The remaining two members of the group match each other 10/12 with one of the markers being a fast moving markers. Whether or not they share common ancestry would need more markers being tested by N9741.

An individual testing in this line with proven ancestry (on paper and unbroken) back to their emigrant ancestor would be very interesting although even having that proof may not assist in finding their "resting spot" in the British Isles.

The A British Isles Ancestry has proven to be rather interesting with the addition of B3322 in that he is a perfect match to N67126. The proven ancestry of B3322 is the Hampshire Blake line which was located in the Southampton area for the last 200 years. My paternal line is part of this group but differs from these two by four markers different or 8/12. and considerably more at 67 markers. (22/67) These two Blake lines are not related in the last thousand years and probably greater than that. However given the similarity of their results it is possible that they are descendant of a particular area. Lately I2a2b has been found to be in the Normandy area of France. This is a fairly rare haplogroup in any population including the British Isles (less than 1%).

More discussion later on the other haplogroups. We are awaiting a couple more results. 

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