Margaret King Moore, also known as Lady Mount Cashell, was the daughter of the Anglo-Irish Lord and Lady Kingsborough and a pupil of Mary Wollstonecraft. She became a writer and an Irish revolutionary, travelled widely in Europe, and studied medicine. At age 19, she married Stephen Moore, 2nd Earl Mount Cashell, with whom she had 7 children. In 1805, she separated from her husband in Germany and he stopped her funds and kept their children away from her. To support herself, she wrote Stories of Old Daniel or, Tales of Wonder and Delight (1808), a collection of moral tales for children. Its popularity led her to produce a sequel, Continuation of the Stories of Old Daniel (1820). After Lord Mount Cashell’s death in 1822, she married George William Tighe, with whom she had two more children. The family moved to Pisa, Italy, where Margaret began to practice medicine in consultation with an eminent Italian professor and surgeon, Andrea Vaccá Berlinghieri. In 1819, she received a visit from Mary Shelley, the daughter of Mary Wollstonecraft, with her husband, the poet Shelley, and half-sister Claire Claremont, whom she persuaded to also settle in Pisa. She also wrote a book on baby care called Advise to Young Mother on the Physical Education of Children, by a Grandmother, and a two-volume novel, The Sisters of Nansfield: A Tale for Young Women.