Clan Gunn has no Orkney origin
I know I have written on the 'Clan Gunn was never from the Orkney Islands' issue before but I have added another entry on the topic. It is more tightly argued than before. See http://clangunn.weebly.com/clan-gunn-has-no-orkney-origin.html
I do not see the slightest academic logic for hoping that the Clan Gunn originated in the Orkneys... It's just romantic fiction...