the defences were repaired, the palace buildings were left in a state of neglect after Henry's death. Their condition was so poor that they were virtually uninhabitable. From 1547 onwards, the Tower of London was only used as a royal residence when its political and historic symbolism was considered useful, for instance each of Edward VI, Mary I, and Elizabeth I briefly stayed at the Tower before their coronations. In the 16th century, the Tower acquired an enduring reputation as a grim, forbidding prison. This had not always been the case. As a royal castle, it was used by the monarch to imprison people for various reasons, however these were usually high-status individuals for short periods rather than common citizenry as there were plenty of prisons elsewhere for such people. Contrary to the popular image of the Tower, prisoners were able to make their life easier by purchasing amenities such as better food or tapestries through the Lieutenant of the Tower. As holding prisoners was originally an incidental role of the Tower – as would have been the case for any castle – there was no purpose-built accommodation for prisoners until 1687 when a brick shed, a "Prison for Soldiers", was built to the north-west of the White Tower. The Tower's reputation for torture and imprisonment derives largely from 16th-century religious propagandists and 19th-century romanticists. Although much of the Tower's reputation is exaggerated, the 16th and 17th centuries marked the castle's zenith as a prison, with many religious and political undesirables locked away. The Privy Council had to sanction the use of torture, so it was not often used; between 1540 and 1640, the peak of imprisonment at the Tower, there were 48 recorded cases of the use of torture. The three most common forms used were the infamous rack, the Scavenger's daughter, and manacles. The rack was introduced to England in 1447 by the Duke of Exeter, the Constable of the Tower; consequentially it was also known as the Duke of Exeter's daughter. One of those tortured at the Tower was Guy Fawkes, who was brought there on 6 November 1605; after torture he signed a full confession to the Gunpowder Plot. Among those held and executed at the Tower was Anne Boleyn. Although the Yeoman Warders were once the Royal Bodyguard, by the 16th and 17th centuries their main duty had become to look after the prisoners. The