I see no problem with this racial mix. The roots of your family are originally Irish Celts who migrated to Wales by 1700. The Iberian 6% is also Celtic. 'Scandinavian' is just not good enough. Your 'Scandinavians' were probably Vikings who penetrated Ireland deeply for quite a long period but were mostly ousted. They founded Dublin and some now form the population of Cumbria. Melvyn Bragg asserted his pride in being of Viking descent. What is surprising is there is next to no Saxon content.
There is no such thing as a 'Celt', 'Viking' or 'Saxon' race.
For example from this link
DNA study shows Celts are not a unique genetic grouphttp://www.bbc.co.uk/news/science-environment-31905764If you click on the specific regions mentioned on Ancestry DNA results, it shows that the region it covers is larger than just the name. For example, under Ireland, it says "Primarily located in: Ireland, Wales, Scotland Also found in: France, England".
Exactly. There is not much difference between any Irish, British or French results and any percent under 15% should be taken with a pinch of salt
From an info page
https://www.ancestry.co.uk/dna/legal/faq#about-2"Trace Regions are regions where the estimated range includes zero and does not go above 15%, or where the predicted percentage is less than 4.5%. Since there is only a small amount of evidence that you have genetic ethnicity from these regions, it is possible that you may not have genetic ethnicity from them at all. This is not uncommon,"
