When was the  Anglo-Irish physician, naturalist and collector died who's niece recovered from spinal deformity due to Sarah "Crazy Sally" Mapp?
Hans Sloane Sir Hans Sloane, 1st Baronet, PRS (16 April 1660 – 11 January 1753) was an Anglo-Irish physician, naturalist and collector noted for bequeathing his collection to the British nation, thus providing the foundation of the British Museum.
Kate Marsden Kate Marsden (13 May 1859 – 26 May 1931) was a British missionary, explorer, writer and nursing heroine. Supported by Queen Victoria and Empress Maria Fedorovna she investigated the care of leprosy. She set out on a journey from Moscow to Siberia to find a cure, creating a leper treatment centre in Siberia. She returned to England and inspired Bexhill Museum, but she was obliged to retire as a trustee. Marsden was dogged after her journey by homophobia, her finances were questioned as were her motives for her journey. Her accusers almost succeeded in making her sexuality the basis for an "Oscar Wilde"-type trial. She was however elected a fellow of the Royal Geographical Society. She has a large diamond named after her and is still remembered in Siberia, where a large memorial statue was erected at Sosnovka village in 2014.