I have been awaiting results from a researcher in Scotland who tested his Flett line. Got them today, have added them to the Flatt DNA Project results page. Here are his comments.
****** I finally have the results for my Flett lineage - I knew already that it was a good match for the R1a Flatts but you can see now at ysearch ID X6SS5 I have absolutely no doubt that the R1a Flatts are in reality Fletts from Orkney. Note that my lineage of Fletts (from Harray in Orkney) have two mutations relative to the other Fletts in my sample (looking at the original 10 markers) - at 389A and B. So there are other Fletts in Orkney that carry 13 30 at this marker as do the R1a Flatts. What is interesting is that at 25 markers my lineage differs from the Flatts in your study at 7, 8 or 9 markers, which sounds like quite a lot, but some of these markers are very fast mutators. It means that it should be possible in the future to work out which branch of the Orkney Fletts the Flatt lineages spring from. I have a number of DNA samples from other Flett lines in Orkney (from different parts of Orkney) but I intend collecting more in the coming years. Flett is a perfect name for genetic genealogy as it is very old and so the links between the branches are pre-paper genealogy in many cases (even though we have excellent paper genealogy for Harray Fletts at least going back to the 15th century). I think we have also managed to break down the brick walls for these people as well! Hopefully they will have a closer match to some of the other lineages that I sample. - they will form part of an academic study that I am planning called ORKNEYINGAR - the people of Orkney. The collection phase of this is ongoing, but I have not yet raised funds for the genotyping phase. Note also that the 19,23 at marker YCAIIa,b shows that the Fletts are in the widespread subtype of R1a, not the Norway-specific type. They are still definitely Norse, but there are two subtypes and the Fletts are in the more widespread one. ***********