Hester Lynch Thrale (born Hester Lynch Salusbury and after her second marriage became Hester Lynch Piozzi, 27 January 1741 [NS] – 2 May 1821) was a British diarist, author, and patron of the arts. Her diaries and correspondence are an important source of information about Samuel Johnson and eighteenth-century life.
Hester Lynch Salusbury was born at Bodvel Hall, Caernarvonshire, Wales, the only daughter of Hester Lynch Cotton and Sir John Salusbury. As a member of the powerful Salusbury Family, she belonged to one of the most illustrious Welsh land-owning dynasties of the Georgian era. Through her father's line, she was a direct descendant of Katheryn of Berain.
After her father had gone bankrupt in an attempt to invest in Halifax, Canada, she married the rich brewer Henry Thrale on 11 October 1763, at St. Anne's Chapel, Soho, London. They had 12 children and lived at Streatham Park. The marriage often was strained, however, her husband frequently felt slighted by members of the court and may well have married to improve his social status. The Thrales' eldest daughter, Hester, became a viscountess.
After her marriage, Mrs. Thrale was liberated and free to associate with whom she pleased. Due to her husband's financial status, she was able to enter London society, as a result of which she met Samuel Johnson, James Boswell, Bishop Thomas Percy, Oliver Goldsmith, and other literary figures, including the young Fanny Burney, whom she took with her to Gay Street, Bath.