Protesters who occupied Edinburgh Castle have claimed they are doing it under “Article 61” of Magna Carta – in reality Chapter 61. This, they would presumably argue, offers a “right to rebellion” against the monarch. Of course that is nonsense, not least because Chapter 61 was an agreement between King John and his magnates – the barons whose rebellion led to the signing (or rather sealing) of Magna Carta in 1215. It was an acceptance that those barons could rebel – or temporarily abandon their fealty to the monarch – but return to the fold without loss of their feudal estates once the issue at hand was resolved. It was not a carte blanche for hoi polloi to rise up and seize royal castles.