(A Map of the Kingdom of Northumbria circa 700 AD – https://commons.wikimedia.org/wiki/File:Map_of_the_Kingdom_of_Northumbria_around_700_AD.svg) Northumbria was one of the most significant Anglo-Saxon kingdoms to the north of the Humber to ever exist. At its peak the Kingdom of Northumbria stretched from the Irish Sea to the North Sea with a northern border on the Firth of Forth and its southern border at …
