Jane Grey, granddaughter of Henry VIII's sister Mary Tudor, was a fierce Protestant and formidable intellectual, rival even to the Lady Elizabeth. Jane was used as a pawn by her ambitious parents, who first schemed to marry her to the young King Edward. Her only solace was in her caring tutor, her studies, and her religion. Though she was one of the great ladies of the realm, she did not enjoy a happy life. She was used by Northumberland, married to his inept son Guilford, and placed on the throne in a dangerous coup after Edward VI's death. Though Jane had no wish to be queen, she accepted the position and ruled for nine days as a puppet of Northumberland.