 The Tribal Hidage lists several minor kingdoms and tribes that are not recorded anywhere else and is generally agreed to be the earliest fiscal document that has survived from medieval England.Historians have used the Tribal Hidage to provide evidence for the political organisation of Anglo-Saxon England and it has been "pressed into service by those seeking to interpret the nature and geography of kingships and of 'peoples' in pre-Viking England", according to N. J. Higham.In particular, the document has been seen as invaluable for providing evidence about the Mercian state and those peoples that were under its rule or influence.