Catherine Sinclair born Edinburgh on 17 April 1800. She was the daughter of Sir John Sinclair of Ulbster (1754-1835). She was in Sir John's later his later years his secretary. After Sir John's death she began to write children's books, light romances and travel guides, and she became renowned for her charitable works. She died on 6 August 1864.

Modern Accomplishments (1836); Modern Society (1837); Hill and Valley (1838); Holiday House (1839); Scotland and the Scotch (1840); Shetland and the Shetlanders (1840); Modern Flirtations (1841); Scotch Courtiers (1842); Charlie Seymour (1844); Jane Bouverie (1846); The Journey of Life (1847); The Business of Life (1848); Sir Edward Graham (1849); Lord and Lady Harcourt (1850); The Kaleidoscope of Anecdotes and Aphorisms (1851); Beatrice (1852); Popish Legends (1852); London Homes (1853); Memoir of Sir John Sinclair Hart (1835); The Cabman's Holiday (1855); Cross Purposes (1855); Torchester Abbey (1857); Anecdotes of the Caesars (1858); Sketches and Stories of Scotland and the Scotch (1859); Sketches and Stories of Wales and the Welsh (1860); Letters for Children (1862); The Bible Picture Letter (1863); published posthumously The Mysterious Marriage (1875).