The Secret Diary of Eleanor Cobham
Lady Eleanor Cobham, Duchess of Gloucester, hopes to become Queen of England before her interest in astrology and her husband’s ambition leads their enemies to accuse her of a plot against the king. Eleanor is found guilty of sorcery and witchcraft. Rather than have her executed, King Henry VI orders Eleanor to be imprisoned for life.
More than a century after her death, carpenters restoring one of the towers of Beaumaris Castle discover a sealed box hidden under the wooden boards. Thinking they have found treasure, they break the ancient box open, disappointed to find it only contains a book, with hand-sewn pages of yellowed parchment.