Quote Originally Posted by gilmore View Post
It's not really in need of sorting out.

There are many of us who descend from both the Celts, (whose Y DNA is usually R1a) as well as the Norse,
The Haplogroup for the Norse Y DNA is I1a. Many of the males from the British Isles and Scotland are R1b.

DNA is a very interesting subject, at first glance it appears to be very complex and complicated because of the large numbers of markers considered. Once you understand the concept of Haplogroups (R1a, I1a, R1b, etc.) it is actually quite simple. The various Haplogroups pinpoint the geographical origin of your original male ancestor. The values of the various markers will help pinpoint your original family.

The study of Somerled's DNA is quite interesting.