Despite a lack of evidence in the form of legal notices or recognition by the Lyon Court of either the Buchanan of Auchmar and Buchanan-Hamilton claims, both are known and accepted by contemporary or near contemporary authorities and authors. Noting that part of the Buchanan-Hamilton claim is that the cadet branch of Buchanan of Auchmar is extinct, Buchanan-Hamilton's wider cadet branch of Buchanan of Spittal would be a plausible starting point for search a hereditary claim on the chiefship of Clan Buchanan. However, in the event that a future hereditary claim is made, it is unlikely that the claim can build off either of the two earlier claims (because neither were recognised by the Lyon Court); consequently, it will be necessary to detail the claim back to 1675 and probably much earlier.