Cambridge started like most British cities. Way back, when the Egyptians were busy building pyramids, we raised some lowly farmsteads in the swamps. The Romans appear afterwards and build some roads (handy) and then the Saxon and the Vikings did various medieval things, after which William the Conqueror assumed control. Then, the tumble of the next millennia created the anthropocene that we lament today. Curiously, the village of Cambridge, used to be called Granta-Bridge (or some middle English variant) it then changed to Cambridge at some point – and according to my dubious sources at Wikipedia – the river name was changed because the city had, not the other way around.