The Danelaw (, also known as the Danelagh; Old English: Dena lagu; Danish: Danelagen) was the part of England in which the laws of the Danes held sway and dominated those of the Anglo-Saxons. Danelaw contrasts with West Saxon law and Mercian law. The term is first recorded in the early 11th century as Dena lage. Modern historians have extended the term to a geographical designation. The areas that constituted the Danelaw lie in northern and eastern England, long occupied by Danes and other Norsemen.