 After a Royal Commission on Local Government in Greater London, almost all of the area of the historic county of Middlesex was incorporated into Greater London in 1965, with the rest included in neighbouring administrative counties.The name means "territory of the middle Saxons" and refers to the tribal origin of its inhabitants.The word is formed from the Old English, 'middel' and 'Seaxe' ('Saxons') ( Essex, Sussex and Wessex).