Northumberland 1542 and Hexhamshire in 1572. Islandshire, Bedlingtonshire and Norhamshire were incorporated into Northumberland in 1844. Tynemouth and other settlements in North Tyneside were transferred to Tyne and Wear in 1974 under the Local Government Act 1972. Lying on the Anglo-Scottish border, Northumberland has been the site of a number of battles. The county is noted for its undeveloped landscape of high moorland, now largely protected as the Northumberland National Park. Northumberland is the least densely populated county in England, with only 62 people per square kilometre. Northumberland originally meant 'the land of the people living north of the River Humber'.
Sussex in the High Middle Ages Essex and Kent, Sussex received some of the most migrants from what is now France after the Norman conquest. Sussex's population in 1086 has been estimated at about 66,000, doubling to 123,000 by 1290. In the High Middle Ages, the Sussex coast was one of the most densely populated parts of England. At the time of the Domesday Book in 1086 coastal Sussex and parts of Suffolk and Norfolk were the only parts of England to record a population density of 20 people per square mile, twice the average for England. Coastal Sussex remained amongst the most densely populated areas