The DB didn't cover all of England. It excluded what is now Cumbria, which at the time was still part of the region of Strathclyde, part of the Kingdom of [[Scotland]]; and also both the Patrimony of St Cuthbert (better known as [[County Durham]]), where the bishopric produced its own 'Domesday', the Boldon Book, in the twelfth century, and [[Northumberland]], a quasi-autonomous earldom on an uncertain frontier. | The DB didn't cover all of England. It excluded what is now Cumbria, which at the time was still part of the region of Strathclyde, part of the Kingdom of [[Scotland]]; and also both the Patrimony of St Cuthbert (better known as [[County Durham]]), where the bishopric produced its own 'Domesday', the Boldon Book, in the twelfth century, and [[Northumberland]], a quasi-autonomous earldom on an uncertain frontier. |