It is 400 years since King James VI visited Berwick on his way to London to become King James I of England.

BBC: Union of Crowns weekend 'a success'

Duffy said the play was written for a Scottish king - King James VI of Scotland, who became England's King James I.

BBC: Edinburgh Festival: When can I watch Macbeth?

King James VI of Scotland, who went on to also become James I of England, attended the Assembly and three years later he commissioned what became known as the King James Bible at the Hampton Court Conference.

BBC: King James Bible: Queen marks 400th anniversary