Next to a road and a large Tesco’s seems like an unlikely place to find a pioneering mapmaker and geographer whose name is known the world over. But the churchyard of St Andrew’s Church, Hove contains the family gravestones of George Everest. Yes, that Everest. Born July 4, 1790, in either Brecknockshire, Wales, or Greenwich, London, Everest joined the East India Trading Company at the age of 16. He was part of the Great Trigonometric Survey, a project that started in 1802 and finished in 1871, with the aim of…