The new house at Chatsworth was not finished; but she had a penchant for building, and continued the work after his death till its completion. There were three sons and three daughters of this marriage, concerning the future wedded lives of which there were deep schemes and plots.
Another courtier fell beneath her wiles in Sir William St. Loe, Captain of the Guard to Queen Elizabeth. He was so enamoured of her that he endowed her with his estates, and disinherited his own kinsfolk. Then he died, and Bess still went on conquering and to conquer.
Her fourth husband was the great prize of all, as far as rank was concerned, for he was none other than George Talbot, sixth Earl of Shrewsbury, one of whose seats at that time was Worksop Manor.
It was not Bess's way to accept a suitor without a bargain being made, having ulterior objects. The Earl had been married before, and had children, so that Bess insisted upon two other matrimonial matches before she would enter into the bonds of matrimony herself for the fourth time.
The stipulation was that her daughter, Mary Cavendish, should marry the Earl's heir and his daughter was to marry her son. These alliances were duly entered into, and brought with them new honours and additional wealth. The building of Worksop Manor house had been commenced in the time of the first Earl of Shrewsbury, but was not finished when the new Countess became its mistress. Having built Chatsworth, here was another opportunity for her to display her genius in architecture, and under her direction it was completed, and became a sumptuous residence.
The Earl must have been a nobleman of redoubtable and fearless disposition, or a courtier whose pliant will was easily moulded by accomplished and attractive women, else he would not have been involved in the feminine intrigues that he was.
Not only had he his imperious wife to consider, but he was appointed custodian of Mary Queen of Scots when that unhappy personage was under the ban of Queen Elizabeth and was sent prisoner to Worksop Manor. She was kept strictly in durance vile, for the Earl was a rigid warder, and did not even allow her to walk in Sherwood Forest.
There is a portrait of Bess of Hardwick in the collection of the Duke of Devonshire at Chatsworth. When Mary was in the custody of her husband Bess first fawned upon her royal prisoner; but a new matrimonial scheme filled her mind which led her to change her conduct into one of hatred. Bess had a grandchild, Lady Arabella Stuart, for whom she planned an alliance hostile to the Queen's interests, hence her smiles were turned to frowns.
En passant it may be said that the Manor went by marriage to the Dukes of Norfolk, who held it for generations and then sold it. Of Bess of Hardwick's building enterprises it may be added that she built Hardwick Hall, "more glass than wall" (according to an old rhyme), in 1587. The Earl died in 1590, and the Countess had another long widowhood of 17 years. Her second son, William Cavendish, was created Baron Cavendish and his great-grandson Duke of Devonshire.
Charles Cavendish was another son of this extraordinary woman, and he bought the Welbeck estate, towards the end of the sixteenth century, from two or three men of obscurity to whom it had passed, after Henry the Eighth had ordered the monastic establishment at the Abbey to be dissolved. His son became Baron Ogle and Viscount Mansfield, and subsequently Earl, Marquis and Duke of Newcastle in 1644.