Sunset at Gowanus Bay

Sunset at Gowanus Bay
Sunset at Gowanus Bay, Henry Gritten, 1851

Thursday, February 25, 2016

Adam Brouwer's Descendants - Haplogroup E-Y19643

YFull, a Y-Chromosome Sequence Interpretation Service updated their Experimental Y-DNA Tree on February 23, 2016. The current version is labeled v.4.02. With this update our three Adam Brouwer descendants have been re-defined as haplogroup E-Y19643. The three descendants of Adam Brouwer are identified by id numbers YF05152, YF04988 and YF03732.

YTree v.4.01 had placed the above three in haplogroup E-Y19508 along with a fourth individual (id:YF04809) whose origins are unknown to us (see the post of February 15, 2016). The new placement in v.4.02 separates our three Adam Brouwer descendants from that individual.

E-Y19643 is a more recent branch of the Y-DNA tree, and our three descendants of Adam Brouwer are the sole members of this haplogroup. The new branch is seen on YFull's YTree here. This branch is identified by 15 SNPs which can be seen by hovering your cursor over the gray box labeled +15 SNPs. YFull currently places the time to most recent common ancestor (TMRCA) for our three descendants at 375 years before present (ybp). Adam Brouwer died in early 1692, which is 324 years ago, and was probably born about 1620, about 396 years ago. YFull currently calculates that E-Y19643 was formed 4100 years ago during the Neolithic Period. Please note that the calculated dates are estimates based upon available data. As more individuals are tested and analyzed by YFull the estimates could change. If enough descendants of Adam Brouwer are tested*, we may be able to see sub-groups of E-Y19643 on the YTree.

Clipped screen shot from YFull YTree v4.02

*Testing is with Family Tree DNA's Big-Y test, followed by analysis by YFull.

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