Ethel Eleanor Mary Cosh, FSA (3 March 1919 – 17 December 2019) was a British freelance journalist and local historian who was known for her works on the history of Islington, London. Her book, A History of Islington (2005), was the first full-length history of the area since the mid-nineteenth century. She also wrote two historical works relating to Scotland. Cosh died in December 2019 at the age of 100.[1]