This category is problematic as it comes from a nationalist standpoint: there is no category on "Germanic people" or "Latin people" for the reasons I shall elaborate. For example, this category has as a sub-category "English people". Whatever genetic research says, the sheer fact is that nobody in England calls themselves a Celt, so to have every single English person of any heritage who ever existed within the category of "Celtic people" is absurd. Wales, Scotland and Ireland are historically places where Celts dominated, but that does not equal that every single person in the whole of their history is "Celtic". This is like saying all Mexicans are Aztecs. There may well be people in those countries who were born there, identify with those countries, but don't call themselves "Celts" because they've never considered it. By the same metric, Category:Brythonic Celts and Category:Gaels shouldn't contain any people or categories of people apart from in a historic sense. Anarcho-authoritarian ( talk) 22:47, 2 April 2017 (UTC)
Propose renaming:
Rationalle: Per most of the Category:Organizations by subject and country category trees. עוד מישהו Od Mishehu 12:39, 2 April 2017 (UTC)