Roy, Our main interest is Edgars, and my wife Jodie (known as Mrs. Poirot, the world-famous detective) has teased out many trees with her research. We have also done DNA tests (115 or so) among Edgars worldwide, and we find four distinct Haplotypes. Interestingly, the Dumfriesshire group is predominantly I2b1, with a scattering of R1bs. I'm in I1, and the fourth group is E1b.
Another interesting connection is between the Edgars and Dunbars, not eally surprising when one considers the history, written and oral -- apparently Cospatrick II was 3rd Earl of Dunbar, and he sired the first R1b Edgar, from whom the Wedderlie Edgars ensue!
So, Roy, is it safe to assume you are descended from one of Allan Wedderlie's sisters?
James