Quote Originally Posted by The Scotsman View Post
These days clan membership is determined by the surname one bears (which is based on the old criteria of "pretence of blood")

"First of all, a word on the rules. The Lord Lyon is an excellent authority, and he points out that name alone is the index of clan membership.

Anyone who does not bear a clan surname should wear a district tartan, if a suitable one exists, or else the Jacobite or Caledonia tartan.

Margaret O. MacDougall, F.S.A. Scot., editing Robert Bain's The Clans and Tartans of Scotland, agreed: "It has frequently been claimed that Scots who do not bear a clan or sept surname may wear the tartan of their mother's clan or sept providing she possessed a clan surname. Although this practice is widespread it is incorrect. Clan membership rests upon name and it follows that if no clan or sept surname is borne, there can be no claim to the tartan of any clan....."
Quick! Someone please inform HRH the Duke of Rothesay (Charles Philip Arthur George Mountbatten-Windsor...)