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St * r * * v * nt GENETIC Project
July 16, 2004
We now have 5 results;
2 with TE spelling, 2 with the DE spelling, and 1 from England with the TI spelling.
Looking at the new result from A2, a descendant of Samuel of Massachussets, we have now established 2 different haplotypes for the descendants of Samuel. Unlike the DE haplotypes, the TE haplotypes are very close but not exact.
Analysis
As expected it is a very close match, but interestingly, there is a difference of 1 in the value for the DYS 442 marker. This is as close as can be without being exact.
So what this tells us, is that the two had a very close common ancestor. Remember that the difference between the TE spelling and the TI spellling of England was 2 markers, and the difference between the two DE spellings was 0 markers.
A look at the male surname tree Joanne provided, shows that the two individuals had a common ancestor of Eliphalet Sturtevant, 5th generation descendant of the original emigrant Samuel Sturtevant. The two participants tested are 10th generation descendants of Sam.
This is a good illustration of how y-chromosome DNA testing works. Two individuals have a common ancestor, but at some point in the ancestry of one of the individuals, a mutation occurs at the DYS 442 marker. This mutation will carry on through that individual's (Eliphalet's) male descendants.
How to use this:
Say we have an individual that does not know his ancestry. But because of the TE spelling, this individual is assumed to be a descendant of Samuel of Massacussets. Using DNA Heritage's pick your marker test and making sure the DYS 442 marker is tested, we can determine that individual to indeed, be a descendant of Samuel, but also determine whether that individual is a descendant of
Samuel, son of Eliphalet,
or
Zophar, son of Eliphalet.
Which gets that person to within 5 generations of their ancestry.
(Of course this also can be used to exclude certain possibilities of ancestry, which can limit the scope of your research)
This is what is meant by establishing a haplotype for a line. We have at least 2 different, but very close, haplotypes for the descendants of Samuel.
July 2, 2004
Have a Wonderful 4th of July & a Grand Old Time !!
Another result has come in. A second DE spelling. Matches the first DE result on all 43 values. The two individuals Share a Common Ancestor at 6&7 generations, John Sturdevant II of western Connecticut, Ridgefield and Danbury, in the mid - 18th century. We now have a haplotype for anybody descended from John and Keziah.
See the results and compare the surname lists here
What these 4 results are telling us;
- The Ti spelling of present-day England and the Te spelling of present-day America, share a common ancestor. However, it was many generations ago, long before the arrival of Samuel in 1640s Plymouth MA.
- The DE spelling is not related in any manner to either of the " T" spellings. They are different Haplogroups. William Sturdevant, who first shows in Norwalk in 1675, is not a kin of Samuel Sturtevant of Massachussetts.
- The DE spelling has little or no variance in its Haplotype. Two individuals, separated by 7 generations from a common ancestor, share the same values for all 43 markers.
- Put these 3 together and we are able to easily tell if a future participant is descended from Samuel or William. A 26 marker test will place a person in either of these lineages. So far the spellings are holding true to form.
