This map shows the "Heptarchy" of Anglo-Saxon Britain: the seven kingdoms of Northumbria, Mercia, Wessex, Sussex (South Saxons), Kent, East Anglia (East Angles), and Essex (East Saxons).
Bartholomew, J.G. LLD. A Literary & Historical Atlas of Europe. London: J.M. Dent & Sons, Ltd. and New York: E.P. Dutton & Co., 1910.