At the time of the Domesday Book in 1086 most of the future county remained part of Scotland although some villages in the ancient district of Millom were included in the Yorkshire section with the Furness region .
Millom were the possessions of the Earl of Northumbria .
At the time of the Domesday Book in 1086 most of the future county remained part of Scotland although some villages in the ancient district of Millom , which were the possessions of the Earl of Northumbria , were included in the Yorkshire section with the Furness region .