From The Art and Popular Culture Encyclopedia
Hester Lynch Thrale (born Hester Lynch Salusbury and after her second marriage, 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.
After Johnson's death, she published Anecdotes of the late Samuel Johnson (1786) and her letters (1788). Together with her diaries which were known as Thraliana, and were not published until 1949, these sources help to fill out the often biased picture of Johnson presented in Boswell's Life. Johnson often stayed with the Thrale household and had his own room, above the library at Streatham in which he worked. Hester's papers provide more insight into his composition process.