Mary Crofts Sidgwick (ca. 1811-1879) was married in 1833 to the Reverend William Sidgwick (d. 1841), headmaster of Skipton grammar school in Skipton, Yorkshire and a cleric in the Church of England. She had four surviving children: William Carr Sidgwick (1834-1919), a Lecturer at Merton College, Oxford; Henry Sidgwick (1838-1900), celebrated Professor of Philosophy at Cambridge and instrumental in the admission of women to university examinations in 1881; Arthur Sidgwick (1840-1920), Assistant Master of Rugby School, 1864-1879 and Fellow of Corpus Christi College, Oxford, 1882; and Mary "Minnie" Sidgwick (1841-1919), who was married in 1859 to her second cousin, Edward White Benson (1829-1896). Benson held the office of Archbishop of Canterbury from 1883 until his death. Among their children were the authors Arthur Christopher Benson (1862-1925) and Edward Frederic Benson (1867-1940).
Sarah Isabella Thompson (d. 1918) was married in 1872 to William Carr Sidgwick and was the daughter-in-law of Mary Crofts Sidgwick. She grew up in the Belgravia section of London, the daughter of John Vincent Thompson (1785-1856), Serjeant-at-Law. Mrs. Sidgwick lived with her husband in Rugby, Warwickshire. She had one child, Nevil Vincent Sidgwick (1873-1952), Fellow of Lincoln College, Oxford and Professor of Chemistry at Oxford University.
From the description of Sidgwick family papers 1854-1898. (Unknown). WorldCat record id: 122398935
