The boundaries of the Danelaw were established by treaty in 884.

York was an important capital city of the Danelaw, but there might have been others at different times.

"Danelaw"

The Danelaw was land in England held under the control of Danish kings arriving with invading armies from the continent.

The Danelaw was a kingdom in the Northeast of England ruled for about 70 years by Danish Vikings. It was recognized by the English in a treaty of 884, and ended in 954, when Eric Bloodaxe was driven out of England. The border separating England from the Danelaw was roughly a line from London to Chester.

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