Northumbria (/nɔːrˈθʌmbriə/; Old English: Norþanhymbra Rīċe; Latin: Regnum Northanhymbrorum) was an early medieval Anglo-Saxon kingdom in what is now Northern England and south-east Scotland. The name derives from the Old English Norþan-hymbre meaning "the people or province north of the Humber", as opposed to the people south of the Humber Estuary. Northumbria started to consolidate into one kingdom in the early seventh century, when the two earlier core territories of Deira and Bernicia entered into a dynastic union. At its height, the kingdom extended from the Humber, Peak District and the River Mersey on the south to the Firth of Forth (now in Scotland) on the north. Northumbria ceased to be an independent kingdom in the mid-tenth century, though a rump Earldom of Bamburgh survived aro