The Kingdom of Lindsey was in approximately what is now Lincolnshire. At the time of the Roman conquest of Britain, it was a part of the territory of the Corieltauvi tribe. Lindsey appears in the 7th century list called the Tribal Hidage, where it is shown to be the same size as Essex and Sussex, all of which were set at 7,000 hides. It was a lesser Anglo-Saxon kingdom which was disputed over by Northumbria and Mercia. It ceased to exist as an independent kingdom during the reign of Offa of Mercia.