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.
Louisa Collings Louisa Elizabeth Collings (née Lukis; 4 June 1818 or 1828 – 24 March 1887) was an amateur lichenologist and natural history collector from the Channel Islands. She was the wife of William Thomas Collings, Seigneur of Sark, and an ancestor of all subsequent seigneurs.