13 Dec 2024 Update

Results for a long-awaited Big-Y700 upgrade have come in.  Check back soon for a revision of the information below...

17 June 2024 Update

G-FTC46083 Subclade of G-L640

This branch of the G-L640 haplogroup is identified by the presence of the FTC46083 mutation. FamilyTreeDNA estimates the man originating this group was born 1713 to 1954CE; family history research has narrowed this down further to around 1713 to 1800CE. It is probable he lived in the state of Virginia.

Additional investigation by this project has discovered that certain subgroups of family lines can be identified within G-FTC46083 by examining various Y-DNA STR marker values in the Y-DNA111 and Big-Y700 tests.

Investigation Subgroup 1 - These men have an ancestor in common who is yet to be identified. They have the following Y-STR DNA marker values in common: DYS710=37, FTY814=13.

• Kit 31503 is a confirmed descendant of Harrison Pritchett (ca.1812-1907) of Muhlenberg County, Kentucky.  Autosomal DNA testing suggests a close connection between this Harrison Pritchett and Hamilton Tomlinson (ca.1795-1853) of Hopkins County, Kentucky.

• Kit 1014870 is a confirmed descendant of Adam Elliott, aka Adam Martin (1818-1925) of Muhlenberg County, Kentucky. 

Tomlinson Subgroup A - These men are confirmed descendants of Alexander M. Tomlinson (ca.1804-1865) of Richmond city, Virginia. Plausible Y-STR DNA markers values have been identified that will define this descendant line, but one more Y-DNA111 or Big-Y700 tester is needed in order to confirm.  Recruiting is underway for an additional test candidate.

• Kit 768943 has distinct Y-STR marker values DYS576=17, DYS712=23, DYS463=21, DYS710=36, FTY814=12 relative to the other men.

Tomlinson Subgroup H - Is composed of men who are confirmed descendants of Hamilton Tomlinson (ca.1795-1853) of Hopkins County, Kentucky. 

• Kit 1017611 is awaiting the results of a Big-Y700 test.

The three subgroups above are believed to have a common ancestor, who has tentatively been identified as Hamilton Tomlinson (Sr), born around the 1760s in, perhaps, Gloucester or Hanover County, Virginia, and died 1829 in Hopkins County, Kentucky.

To date, all the tested men in the G-FTC46083 group also carry the FT242397, FTC45385, and FTC60863 mutations. It is desirable to locate men who lack one or two of these mutations so we can identify a new DNA branch of men.

G-Z3520 Subclade of G-L640

This branch of the G-L640 haplogroup is identified by the presence of one of the following equivalent SNP mutations: Z3520, Z3307, or Z6111. FamilyTreeDNA estimates the man who originated this branch was born between 1078 and 1569 CE. He may have lived in England.

G-Z3520 has the following descendant branches: G-FGC336 (1248 to 1697 CE), G-FGC348 (1568 to 1902 CE), and G-FTD82895 (1500 to 1869 CE).

Negative Test Results

Men who are hypothesized to be Y-DNA matches with us but wind up not being so offer valuable clues to narrow the identity of distant ancestors.

Linson Subroup. It was originally hypothesized that one or more Tomlinson men of pre-Revolutionary Frederick County, Maryland was an ancestor to Tomlinson Subgroups A and H. The descendants of the Frederick County Tomlinsons go by the name of Linson in the present day. This hypothesis was based on autosomal DNA match information between Linson testers and members of the aforementioned Tomlinson subgroups across several testing companies. A direct male line descendant of the Linsons who had Y-DNA testing done elsewhere was found to be in a different major branch of the Y-DNA tree from our group. If this is confirmed with one more male Linson, then it will rule out a patrilineal connection between the three Tomlinson groups; the DNA connection to the Linson group would be elsewhere via another branch.

On The Radar

If the aforementioned Hamilton Tomlinson (Sr) is indeed the common ancestor of the men above, it is probable he carried the four SNP mutations -- FTC46083, FT242397, FTC45385, FTC60863 -- and any lines of men that branched off prior to his time will either be missing one of these mutations, or might carry a new one of their own.  Records show while living in Hanover County, Hamilton Sr associated with a Samuel Tomlinson who originally came from Gloucester County, Virginia; there were no other adult Tomlinson men in Hanover County at that time.  If the two men are close relatives, then it may be possible that male descendants of 18th century Tomlinsons in Gloucester County may be one of those earlier branches.  Recruiting is underway by this project to locate male Tomlinsons in Gloucester and present day Mathews County, Virginia for testing.