This cache is a series of 26 caches, one fir each of the letters of the alphabet. Placed across the County by a team of 'Nottingham Geocachers'. The caches vary in type, size and difficulty. Each one has a different initial letter and a link to the county of Nottinghamshire.
Wikipedia
George Green (14 July 1793 – 31 May 1841) was a British mathematical physicist who wrote An Essay on the Application of Mathematical Analysis to the Theories of Electricity and Magnetism in 1828.[2][3] The essay introduced several important concepts, among them a theorem similar to the modern Green's theorem, the idea of potential functions as currently used in physics, and the concept of what are now called Green's functions. Green was the first person to create a mathematical theory of electricity and magnetism and his theory formed the foundation for the work of other scientists such as James Clerk Maxwell, William Thomson, and others. His work on potential theory ran parallel to that of Carl Friedrich Gauss.
George's father (also called George) built and worked the windmill and lived tthere. George only attended school for one year as he was considered a genius, teachers didn't know what else they could teach him and was mostly self taught. He is buried very close to the cache in St Stephen's churchyard. He is in good company as my lovely Nana is also buried there.
Why not visit the windmill and science centre whilst you're here. It is still functional and produces flour.