Northumberland (abbreviated Northd) is a county in North East England. The northernmost county of England, it borders Cumbria to the west, County Durham and Tyne and Wear to the south and the Scottish Borders to the north. To the east is the North Sea coastline with a long distance path. The county town is Alnwick, although the county council is in Morpeth. 

The county of Northumberland included Newcastle upon Tyne until 1400, when the city became a county of itself. Northumberland expanded greatly in the Tudor period, annexing Berwick-upon-Tweed in 1482, Tynedale in 1495, Tynemouth in 1536, Redesdale around 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 most sparsely 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'. The present county is the core of that former land, and has long been a frontier zone between England and Scotland. During Roman occupation of Britain, most of the present county lay north of Hadrian's Wall, and was only controlled by Rome for the brief period of its extension north the Antonine Wall. The Roman road Dere Street crosses the county from Corbridge over high moorland west of the Cheviot Hills into present Scotland to Trimontium (Melrose). As evidence of its border position through medieval times, Northumberland has more castles than any other county in England, including those of Alnwick, Bamburgh, Dunstanburgh, Newcastle and Warkworth.
is denmark the last one ?
Warkworth