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A great grandson of Rector Daniel Leigh had his Y-DNA tested for 67 markers. The markers have been placed in ysearch.org, and his ID is H8G3U. His Haplogroup is I1.
A great grandson of William Leigh had his Y-DNA tested by for 67 markers. The markers have been placed in ysearch.org, and his ID is KGYRY. His Haplogroup is I1.
The earliest known Leigh ancestor in Wales is 2 Ralph Leigh. The number "2" is the number assigned to Ralph Leigh in the Descendancy Chart, and that number, along with the appropriate numbers for the other names in the diagram, is given to provide correlation of our DNA testing with the paper trail given in the Descendancy Chart. The diagram given above shows the descendants of Ralph Leigh down to the three persons who voluntarily had their DNA tested. The actual names of the three persons and of their immediate ancestors are not given to preserve the privacy of those persons. Each of the three persons is the great grandson (ggson) of the last name given in the line of that person. The three persons are 7th cousins.
The Genetic Distances of the Three Leigh Descendants
|ggson of 103 Samuel Leigh
ggson of 153 William Leigh
|ggson of 122 Daniel Leigh
ggson of 153 William Leigh
|ggson of 103 Samuel Leigh
ggson of 122 Daniel Leigh
The Markers of the Three Leigh Descendants
Approximating the Markers for Ralph Leigh
Now that we have the values of the markers, let's compare the markers of the great grandsons of Samuel and William Leigh. There are only two markers that are different, 464b and 464d. This is significant, because it means that the markers that are not different have the same values as Oakley Leigh, the common ancestor of the two men. Initially, we don't know which line had the mutations that we see in the Y-DNA of the two men. However, if we bring in the marker-values of other persons, we can possibly get a more accurate comparison for those two markers. The following table gives values for 464b and 464d for four persons, the three great grandsons who were tested and a fourth person who has a close Y-DNA match with our Leigh lines but is not in our paper trail.
|ggson of 103 Samuel Leigh||14||15|
|ggson of 153 William Leigh||12||14|
|ggson of 122 Daniel Leigh||14||14|
|SR-1 of the Brookings website||14||15|
This allows us to conclude that those two markers in the Y-DNA of SR-1 and in the Y-DNA of the great grandson of 103 Samuel Leigh have with a high likelihood the correct values. The rest of the markers in the Y-DNA of the great grandson of 103 Samuel Leigh are the same as the markers passed through a different path to the great grandson of 153 William Leigh. Thus, it is likely there is a perfect match between 2 Ralph Leigh and the great grandson of 103 Samuel Leigh. To strengthen this conclusion, the Y-Markers of six other people who have been tested by FamilyTree and have a reasonable match with the great grandson of Samuel Leigh are given in the spreadsheet. Five of the six people have the same values as SR-1 and the great grandson of 103 Samuel Leigh for the two markers. In addition, there are 14 people who have been tested by Ancestry.com with good matches to the great grandson of 103 Samuel Leigh, and all 14 persons have the same values for the 464 markers as the great grandson of 103 Samuel Leigh and SR-1. The conclusion mentioned above is described as "likely" because there is a possibility of mutations that compensate for each other and for random matches between the great grandsons of 103 Samuel Leigh and 153 William Leigh.
Technical Analysis of the Y-DNA Markers
For those interested in the technical details, the following analysis was given by a person at FTDNA of the changes in the markers for the great grandson of Rector 122 Daniel Leigh.
[This person] experienced a recombinational-loss-of-heterozygosity (recloh) event, meaning one segment of his Y chromosome containing 2 copies of the DYS464, 1 copy of DYS459, and 1 copy of CDY duplicated itself and replaced the matching segment that contained the remaining copies of these three markers. The 8-9 for DYS459 became 9-9; the 12-14-14-15 (or 12-12-14-14) for DYS464 became 14-14-14-14, and the 34-35 for CDY became 34-34.The person also gave the following analysis of the markers for the great grandson of 153 William Leigh.
[This person] experienced the same type of mutation, but on a smaller scale. This time it only affected DYS464; he went from 12-14-14-15 to 12-12-14-14. In both cases you should consider the above listed changes as 1 mutation per lineage. Their genetic distance is of course higher because the mutation affected multiple loci.The person giving the analysis concluded that "The simplest explanation then is that all the mutations moved lineages away from the 12-14-14-15 or a similar set of ancestral values."
Important for Future Research
From our viewpoint, having the Y-DNA markers for the great grandson of 103 Samuel Leigh is important, because those markers are likely an exact match with the markers of 2 Ralph Leigh and will hopefully help us identify the family in England of Ralph Leigh. Having the Y-DNA markers for the other two great grandsons is important, because if the same patterns of values in the 464 markers of the other two great grandsons appear in the Y-DNA of some of our Y-DNA Relatives, those values may be a clue as to when and from which lines the immigration took place that brought our DNA relatives to the United States.