Thank you very much for the reply and the feedback. I do not feel that my edit contravenes WP:OR  as the material added to Wikipedia has now been attributed to a reliable, published source namely to the website of the published author of “The Legend of Laphroaig”. The position which my edit advances is the same position as the source. The DNA results which have also been used as a source have also been published via a reliable source namely the Clan Donald DNA Project website. I also feel that in the context of WP:COI, I have declared my interest being a descendant and I am not attempting to advance my own interests via editing Wikipedia. I am simply seeking to ensure that an encyclopedia contains the most up to date published material relating to this subject. I feel that an element of common sense should also apply. A single source (Laphroaig website) states ‘The McCabe brothers being of MacDonald stock” without offering any evidence and then you have multiple published sources that have disputed this fact and have provided a volume of evidence to support their claim that the Johnston’s were not McCabe’s. I certainly welcome further discussion in relation to this issue and can be contacted on emailcj@yahoo.com