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Haplogroup R-BY3368

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Surnames/tags: Y DNA Y Haplogroups BY3368 and subclades
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While this is the former BY3368 Y DNA Project page... with Y DNA information being revealed by more Big Y-700 tests over the past few years, that project has changed to the new BY3374 Y DNA Project. You can see links to that project, below.

The age estimation for BY3368 is ca. 950 AD/CE, at which time, these people (based upon BY3364 Big Y-700 test-taker information) were in modern Yorkshire, England, and were possibly associated with the Kingdom of Elmet[1], yet another Brythonic kingdom. It appears likely that BY3368 was made-up of people who fled from within, or very near, the Kingdom of Dumnonia[2], in what is now SW England. Given the distribution of the surnames under BY3364, and the historical timeline, the BY3368 people were among the Brythonic-speaking[3] residents of the Kingdom of Dumnonia which were pressured out of that area by the Anglo-Saxons between the 6th and 10th centuries, AD[4]


Haplogroup BY3368 Age Estimation

  • FTDNA estimates Haplogroup R-BY3368 represents a man who is estimated to have been born nearly 1,100 years ago (ca. 950 AD/CE).

BY3368 Phylogenetic Parent

BY3368 Phylogenetic Children

  • BY3374 (Mure/Muir and associated surnames of SW Scotland)
  • FTB90017 (Yorkshire, England and Lanarkshire, Scotland)
  • TBD (SW England)


  4. While Harding kit #562136 (BY3364 + 7 pv), traceable to Wiltshire, England, may be indicative of the earliest, pre-surname location traceable for Haplogroup BY3364, another kit, Bassett kit # 80990 (sample no longer viable to test to Big Y-700), may also point to SW England. Test-takers who are currently BY3368 (subclade/branch of BY3374) are Agar (kit #B215899) and Ardrey (kit # unknown). Neither are a match to each other at any level (Y-12 to Y-111), indicating a GD of more than 10. Agar claims ancestry in Yorkshire, while it's likely Ardrey is connected to the Ardrey line of Lanarkshire, Scotland. Beyond these two kits, at least two (Bostick - kit # unknown, and Chesser - #N14023) claim ancestry in Yorkshire, and Cheshire counties, respectively. This gives us a "breadcrumb" trail, from 450 AD/CE, from SW England to these the area near modern Yorkshire. What this may suggest is that branches of BY3364 left the Kingdom of Dumnonia for the Kingdom of Elmet (essentially centered on modern Leeds, England). Given BY3368 did not emerge until ca. 950 AD/CE, this also indicates the BY3368 Scotland branches (BY3374 and one other not yet identified) of BY3368 did not arrive in that area until (likely) the early to late 11th century. Of course, BY3374, while covering a range of surnames, had its progenitor in a Mor/Mure/Muir. Ardrey (BY3368>TBD) has zero matches at Y-111. Brown (kit #158234) is a 19th century NPE (John Brown, 1865-1938, was born to Margaret Brown, daughter of Andrew and Margaret Brown), born in Campbelltown, Argyll).

Comments: 13

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2. - Last names like Thompson often match several different surnames. Is this likely because patronymics was in use as late as the 15th Century? For example: Thompson (son of Tom or Thomas).
posted by Janice (Moore) Cronan
Pertaining to the Muir > Moore shift? Maybe. But, as Muirs began fanning out, especially into Ulster, I don't think I've seen the Muir surname survive that transition. In other words, I've not seen the Muir surname transition out of Ulster with a family, after leaving. It always seems to drift to Moore.
posted by Robert Moore II
edited by Robert Moore II
Loved reading about Balliehill Mount. So fascinating the way you research and weave all this information together in a way that even I can understand. Thank you so much.
posted by Janice (Moore) Cronan
Thanks! I need to tweak this a little, but Bailliehill Mount seems to be central to BY3374 lines. Fascinating stuff!
posted by Robert Moore II
I realized I didn't add the video. Need to do so. Here it is via YouTube:

posted by Robert Moore II
This page is amazing. Great work!!
posted by Geoff Grant
Thanks, Geoff! It's ongoing, and I'll be adding significantly more during the upcoming winter.
posted by Robert Moore II
Hi Robert. I am wondering about the Bostick name listed among "other surnames" . Do we have a Bostick tester in the Group 2 Moores? Betty Marty
The Bostick match is only a Y-67 matches, and at a GD of 4, is not likely something worth pursuing.
posted by Robert Moore II
The Bostick surname may be in a branch of BY3364 which did not go to Scotland, but was among those (before surnames) who fled the pressure of Anglo-Saxons, in SW England, to NW England. The surname is one which can be found in Cheshire, where we may also have a few other BY3364>TBD lines, in other surnames such as Chesser.
posted by Robert Moore II
Thank you, Robert. I asked because the Bostick match to my Moore Big-Y testers does not match any other Bosticks in the Bostick group project. It is amazing how far beyond our 67-marker matches we have now gone! Thanks for all you have done to help us in the analysis. Betty Marty.
reached out to him and he replied, but I couldn't get him to reply after that. I was trying to encourage him to join the BY3364 and Subclades Y DNA Project, and to upgrade to Big Y-700.
posted by Robert Moore II
... and thank you, Betty! It's been enjoyable to see how it has unfolded.
posted by Robert Moore II