The Bytham River was one of the great Pleistocene rivers of central and eastern England until it was destroyed by the extreme Anglian Glaciation around 450,000 years ago, it is named after which village and civil parish of around 300 houses in South Kesteven, Lincolnshire, England?
Bytham River:  It is named after Castle Bytham in Lincolnshire. Castle Bytham: Castle Bytham is a village and civil parish of around 300 houses in South Kesteven, Lincolnshire, England.
Castle Bytham