Stewart Haplogroup R1b 67 Marker Relationship Tree – May 2011. Draft 4.

Contributed by Belinda Dettmann

This is the fourth draft of a hypothetical Relationship Tree for R1b Stewarts.  The first draft was written in January 2008 and was based on tests with 37 markers. Since then many more 67-marker results have become available for Stewart testers and revised versions were released in August 2009 and August 2010, based on 67-marker tests only. This release, labeled Draft 4, is based on 67-marker tests from Projects Stewart, Stewart-2 and Stuart at FTDNA, as at May 2011.

The dots on the graph represent DNA haplotypes from testers with the Stewart surname, or those who have joined one of the Stewart Projects at FTDNA. Analyses indicate that there are several recognizable but separate groups of Stewarts, shown in various colors on the graph.  Many Stewart test results cannot yet be assigned to groups and these are shown here in yellow.

Large dots represent more than one test.

Modal. R1b modal: Western Atlantic Modal Haplogroup (WAMH)

Represented by the yellow dot labeled ‘modal’ in the centre of the diagram.

Red:  Ancient Stewart Group

The large red dot labelled 110059 lies at a Genetic Distance (GD) of 6 mutations from the R1b modal, and consists of a group of identical haplotype results, (numbered 110059, 179069, 181994, 183344, QHV9S), which are believed to be unchanged from the Y-DNA signature of Alexander Stewart (c 1220-1283), 4th High Steward of Scotland. He was the ancestor of the Royal Stewart kings of Scotland (via King Robert II), and the Royal House of Stuart in the United Kingdom (via King James I and VI), plus many other lines of Stewart or Stuart nobles in Scotland, England, Ireland and France.

Originally the QHV9S haplotype did not represent the test result of any single person, and was inferred from the pattern of Stewart results shown in Draft 2 of the diagram created in August 2009. That haplotype was  entered in Ysearch as QHV9S.  No testers were then known to have results that exactly matched the QHV9S signature but four identically similar results for individual Stewart descendants have been found since. 

The red group consists of Stewarts who have been tested to 67 markers and who match the QHV9S haplotype at a genetic distance (GD) of 8 or less. All have the Ancient Stewart marker signature of GATA-H4=10, 406S1=11, 525=11. These testers include several known descendants of the ancient line of the Stewart High Stewards of Scotland.

More detailed diagrams of the Ancient Stewart Group appear in separate files on this site.


Teal Blue: Scots Modal line: R1b-Pict

Five tests – 190435, 173787, 73032, 169729, 180079.


Violet:  Scots Modal line: Abel Stewart

Results for 67 markers are shown for tests:  (69387, 49809, 62110).


Yellow-Green: Scots Modal line: John Stewart, NC Macon 1740-6

Five tests – N3086, 44769, 143812, 4137, 189515.


Grey: Scots Modal line: Sam/Lydia Stewart, Rowan NC

Two tests – 6865, 161895.


Brown: John Stewart, England

Four tests – 15328, 158549, 4874, 5740.


Grey-Green: Probably a Scottish line.

Four tests – N48936, 191511, 121522, 191455.


Pink: Clough

Two tests – 183350, 11270.


Pale Green: Dennison

Two tests – 106716, 65194.


Blue-Grey: ROX2

Eight tests – 24487, 87511, 71870, 60417, 101298, 158861, 103245, 142928.


Dull Green: R-S21/U106

Three tests – 116413, 18929, N31052.


Green: R-M222. Niall of the Nine Hostages

Five tests – 14385, 67617, 69283, N87764, 56463.


Lilac: R-L2

Two tests – 50481, 172561.


Yellow:  R1b Unassigned Group

The yellow dots are unassigned individuals, well separated from the other groups in terms of their Y-DNA, so they are unlikely to be direct-line descendants of the Ancient Stewarts or other existing groups.