Oliver Cromwell led England from 1653 ... shows that the artist believes it was wrong to execute Charles. It has been produced to deliver a message, or opinion, rather than as an accurate picture ...

The third book on display is a copy of the 1638 edition of the Church of England's official service book, the Common Book Of Prayer - a devotional text that played a pivotal role in Charles I's reign.

Historic texts associated with Charles I are being displayed near his birthplace to mark 400 years since he was crowned king.