Monday, April 10, 2017

Time estimates for the four matching I1 haplogroup lineages

We now have time estimates for the new sub branches to our I-Y22033 overall Runciman SNP (this prior post refers).
They come from the new tree, version 5.03.
YFull also provide a different name for the Alexander of Meikle Pinkerton SNP branch - I-A11393, compared to FTDNA's I-A11400.
The overall I-Y22033 has moved back 50 years from 550 to 600 ybp (years before present, where present = 1950)

Annotating the above with the known information re the lineages' most distant known ancestors and the most recent common ancestor (MRCA) between the pairs on the sub branches:
Bear in mind that a SNP mutation can occur at any generation down from the MRCA to the test taker.

Looking back to the STR results to 67 markers for David (R-1) and Jerald (R-2) the 4th cousins once removed sharing I-A11399, they share 66 of the 67 tested markers, differing only on DYS481 (24 vs 25 repeats).  The Time Predictor at FTDNA shows a 71% probability of them sharing a common ancestor within 6 generations given it was known they did not share an ancestor within 4 generations.

Thursday, February 16, 2017

New I1 branches for RUNCIMAN

Check out the abbreviated I1 tree in the Haplogroup section of DNASurnames, particularly the I1 RUNCIMAN branch I-Y22033 aka I-A9096

FTDNA have revised their I1 tree after analysing the 6 RUNCIMAN BigY results and we now have two subclades under I-Y22033,

  • I-A11399 for Lineage 1a (the Wanton Walls branch) and 
  • I-A11400 for Lineage 1d (Alexander of Meikle Pinkerton's branch)

Waiting for to catch up once they've analysed the remaining two BigY kits, which will be some weeks away yet, and to provide some time estimates to the new subclades.
The overall I-Y22033 branch still contains Lineages 1b (William of Crail) and 1c (Thomas of Dunbar)

As at mid Feb 2017:

where "new" shows Jerry (R-02 from Lineage 1a)'s kit as having begun processing.

We may soon have some idea of what we set out to explore with BigY testing - when did the 4 I1 yDNA STR matching lines diverge?
Currently, with four kits analysed, the estimate is after 550 ybp, ie after 1400 sometime.

To do this sort of work the pre-requisite are tested RUNCIMAN lines.
There must be more out there willing to explore at least a little to see whether or not they match any of the others, even though it is a surname with an occupational origins.