Sarah Burney was born at Lynn Regis, now
King's Lynn, and baptised there on 29 September 1772. Her mother, Elizabeth Allen, was the second wife of Charles Burney, and relations within the family were often strained. Sarah was brought up in
Norfolk by relations of her mother until 1775, when she joined the Burney household in London. This reunion features in a letter from Frances Burney to the dramatist
Samuel Crisp: "Now for family.... Little Sally is come home, and is one of the most innocent, artless,
queer little things you ever saw, and altogether she is very sweet, and a very engaging child." In 1781 she was sent with her brother Richard (1768–1808) to
Corsier-sur-Vevey, Switzerland, to complete her education and probably returned in 1783. She gained an excellent knowledge of French and Italian, and acted as an interpreter for
French refugee nobles on several occasions. As an adult Burney alternated between nursing elderly parents in
Chelsea (her mother up to 1796, her father from 1807 to 1814) and periods as a
governess and companion, as she was not wealthy. Life with an ill-tempered father suited Burney even less after her mother died. Her half-brother Rear Admiral
James Burney (1750–1821), having separated from his wife, wished to move back in with his father and sister, but his father forbade it. So there was family consternation when Sarah and James absconded together and spent the years 1798–1803 living in some penury in Bristol and then London. It has even been suggested that their relations were
incestuous. The assumption has been challenged in detail in a more recent, closely researched account of Burney's life and personality. Sarah's surviving bank statements show that her small wealth was much depleted over this period. In 1807, Sarah Burney moved back again to nurse Charles Burney, but her relations with her father remained poor and she inherited very little when he died in 1814, though she had served as his housekeeper and
amanuensis. She lived in Italy from 1829 to 1833, mainly in Florence. There is an appreciative description of her in the diary of
Henry Crabb Robinson, who met her in Rome in 1829. She coincided in Italy with her niece and favourite correspondent, Charlotte Barrett (1786–1870), who was nursing her two daughters through
tuberculosis. One died, but the other,
Julia Maitland, later made a full recovery. It is unclear why Sarah Burney's relations with her niece cooled for some years after that period, but it may have been felt she had not to have given the Barretts all the practical help that they expected in Italy. Life in Italy was cheaper, but Burney felt increasingly lonely there. She returned in 1833 to live in
Bath. Despite financial help from Frances Burney, who also left her £1,000 in her will, she was short of money. This prompted her to revise and publish a pair of short novels she had begun earlier. Sarah Burney moved to
Cheltenham in 1841, where she died three years later, aged 71. ==Relationship with Fanny Burney==