Jackson Family Genealogy
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Jackson Clan DNA Project

Updated 29 Oct 2017
by John R. McAnally

New testing techniques have provided means where by we can cheaply determine your patriarch and which branch of this clan that you belong to.  No longer should the descendants of Robert Jackson refer to themselves as Hempstead Jacksons, but more precisely by the technical term haplogroup I-Y9349.*  Their branch of this Jackson clan is larger than the place name (Hempstead) implies.  All this comes from the recent advancement in YDNA testing called the Big Y, a change from the original STR (short tandem repeat) test to the SNP (single nucleotide polymorphism) type of test. A direct male descendant of each patriarch, those being Robert Jackson of Hempstead and Samuel Jackson of Pennsylvania, took the Big Y test and found that they have a MRCA (most recent common ancestor) 500 years before present - or better to say they have a common ancestor in about the time that the English were first establishing surnames. 

Presently there are three branches of this clan that are defined by five patriarchs. 

I-Y9389: Robert Jackson b. England 1615/20 d. 1683 Queens Co. New York and Samuel Jackson b. 1757 Ireland d. 1834 Greene Co., Pennsylvania combining to make the first.  By that we mean that a direct male descendant of each patriarch has done the Big Y test and it has shown that these two men are a match that indicates they have a common ancestor in the 1500s Any male Jackson that conjectures that he is a direct male descendant of these patriarchs but cannot prove such via standard genealogical proofs can prove such via this SNP test at FTDNA at the cost of $39 or at SEQ at the cost of $18.  

I-BY19809 The second branch formed by Samuel Jackson b. abt 1650 d. 1722 Stafford Co., Virginia and John Lynn b. abt 1730 Stafford Co., Virginia d. 1794 Fauquier Co., Virginia has determined their MRCA as 200 years before present which implies that they have a common ancestor in the named Samuel Jackson, thereby meaning John Lynn was a direct male descendant of Samuel Jackson.  Regardless, this match has established a second branch of our Jackson clan that is distinct from the haplogroup I-Y9389.   Any male Jackson that conjectures that he is a direct male descendant of either of these patriarchs, but cannot prove such via standard genealogical proofs can prove such via this SNP test at YSEQ at a cost of $18.  FTDNA has as yet not established a test for BY19809. 

I-M223: Big Y testing is now in progress for Graham Jackson of Australia, a descendant of Thomas Jackson of Ireland.  The Big Y test will take approximately 3 months to complete including the analysis at Yfull that has to be done after FTDNA has the Big Y results.  Graham was negative for the SNP  test of I-Y9349 and I-BY19809 which means his progenitor forms our third branch.  At FTDNA posting the haplogroup in green implies that the person has been proven via testing to be in that group and those in red are just predictions from an analysis of the STR results. 

Of the five patriarchs only one, that of Thomas Jackson (b. abt 1797 Ireland d. aft 1873 Ireland) has records of a marriage and births of children that can provide a point of reference so that further research in Ireland/UK can be done. The other patriarchs records end within the United States or with only family lore conjectures to the old country.

There are 47 Jackson men of our clan out of nearly 650 total YDNA participants in the Jackson Surname Project at FTDNA.  Eleven have not been able to establish a connection to any of the four patriarchs nor have extended their pedigree further back in time to be so named, ie having found the original immigrant.  These men could be descendants of the established branches or anyone of them might be a completely separate fourth branch.  The recent Big Y testing and subsequent SNP testing can now be used to test which branch they belong to.
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We are continuing to call this whole Clan 'Hempstead' at FTDNA for lack of a better name.  That 'I-Y9349' is not handily  remembered.

This google speadsheet mentioned on the Home Page, was prepared to help you visualize the relationships and connections of the Hempstead Clan descendants who have participated in DNA testing.   The initial basis for the google spreadsheet was an excel spreadsheet that Janie worked on but has been unable to post it to the site.  So the google s/s is our alternative. 

https://www.familytreedna.com/groups/jackson/about/results  The lineages are back on the site, but not yet grouped.  They are working on getting them grouped.  It has been a BIG job getting the FamFinder results merged in.  Thanks for your patience!  Remember this is all volunteer work by people who care!

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Copyright 2017, all rights reserved by the individual authors.    You are welcome to use any of this information for your personal use, but it may not be copied, uploaded on any web site, or used for commercial use in any form.  This page  by John R. McAnally was updated October 29, 2017.  
(Comments RE links edited by Janie  12/1/2017.)