" The deletion of an apostrophe and a single letter turned “Jane’s” into “Jane,” and the words “and her” were inserted immediately thereafter. Now the crown was to pass not to the male heirs of Jane Grey but to “the Lady Jane and her heirs masles.” (Edward was of course highly literate, but spelling was a kind of free-form creative art in the sixteenth century "

― G.J. Meyer , The Tudors: The Complete Story of England's Most Notorious Dynasty