Sir William died in 1557, but Bess finished the house in the 1560s and lived there with her fourth husband, George Talbot, 6th Earl of Shrewsbury. In 1568 Shrewsbury was entrusted with the custody of Mary, Queen of Scots, and brought his prisoner to Chatsworth several times from 1570 onwards. She lodged in the apartment now known as the Queen of Scots rooms, on the top floor above the great hall, which faces onto the inner courtyard.