The Tribal Hidage is generally considered to be a list dated to 7th or 8th century Anglo-Saxon England. It was a list of 35 tribes that made up the majority of the peoples living in southern England at that time. Each tribe or kingdom on the list had a rounded off number of hides (units of land measurement). Modern historians believe it was created by either Mercian or Northumbrian overlords to collect tribute from the other groups.