In 1086 he compiled a book called the [[Domesday Book]] which listed every single town and village in England south of the [[River Tees]], and how much tax it was possible to extract from them. Today this is a priceless document of medieval history and is an invaluable source in tracing ancestry. In principle entries in the book can still be used to raise taxes, although this rarely happens in practice. | In 1086 he compiled a book called the [[Domesday Book]] which listed every single town and village in England south of the [[River Tees]], and how much tax it was possible to extract from them. Today this is a priceless document of medieval history and is an invaluable source in tracing ancestry. In principle entries in the book can still be used to raise taxes, although this rarely happens in practice. |