They went around to every single village and town and asked them. The Doomsday book (https://en.wikipedia.org/wiki/Domesday_Book https://en.wikipedia.org/wiki/D

They went around to every single village and town and asked them. The Doomsday book (https://en.wikipedia.org/wiki/Domesday_Book https://en.wikipedia.org/wiki/Domesday_Book) is fascinating because of its thoroughness and completeness at such an early time.