Your search for "Bess as Lady Cavendish, married to Sir William Cavendish" returned 5 letters.
Bess (Lady Cavendish) writes to Sir John Thynne after completing a long and troublesome journey home, with an account of her travel difficulties and the disordered state in which she found her 'poor house' (i.e. Chatsworth) upon arrival.
Bess (Lady Cavendish) writes to Sir John Thynne with news of 'disordered things' recently put 'into some good order', including relations with her tenants. She hopes Thynne can visit Chatsworth on his next trip to London or when visiting his estates in Yorkshire.
Sir William Cavendish writes to his wife, Bess (Lady Cavendish), asking her to pay a London man for oats they bought from him.
Bess (Lady Cavendish) writes to her servant Francis Whitfield concerning the management of Chatsworth, and asks him to look after everything until her aunt (Marcella Linacre) arrives. Among her instructions to Whitfield are that he is to take only wooden 'cleats or boards' not needed for the ongoing building works at Chatsworth; to brew beer, especifically for her and her husband William Cavendish; to repair her bedroom; and to pay her midwife. She also reprimands him for not supplying her sister Jane (née Hardwick) with 'things needful for her'.
Mary Percy, widow of Henry, sixth earl of Northumberland, writes to Bess (Lady Cavendish) about land and cattle disputes involving the letter bearer and one of Bess's servants.