King Charles’s head
From our UK edition
‘It has become something of a King Charles’ head, or should that be a King Charles’s head?’ said my husband, laughing, as though he had made a joke. By ‘it’ he meant the apostrophe, which forces its way into any discussion of grammar, just as the head of the King and Martyr forced itself into the memorandum that Mr Dick, the amiable lunatic, was attempting to write to the Lord Chancellor in David Copperfield (1850). Looking through the book, I found the exact phrase once, when Mr Dick mentions to David that ‘the mistake was made of putting some of the trouble out of King Charles’s head into my head’.