In the century preceding the Norman Conquest, the Earl (or 'Eorl') represented the pinnacle of the English secular aristocracy beneath the Crown. Evolving from the earlier office of 'ealdorman', the position transformed under Cnut the Great into a more powerful, quasi-administrative role modeled on the Scandinavian 'jarl'. Unlike the local jurisdiction of earlier ealdormen, late Anglo-Saxon Earls often presided over vast earldoms comprising several shires—such as Wessex, Mercia, or Northumbria—exercising significant military, judicial, and fiscal authority on behalf of the King.
While the office was theoretically an appointive administrative position rather than an inherently hereditary right, the immense power and landed wealth (comprising official 'earl-lands' and private estates) held by families like the House of Godwin essentially created a de facto hereditary caste. The Earl received the 'third penny'—one third of the profits of justice and boroughs within his jurisdiction—integrating him into the proto-feudal financial structure. Following 1066, William the Conqueror retained the title but modified its nature, reducing the territorial scope of earldoms and integrating the rank into the strictly defined Norman feudal hierarchy, where it became the English equivalent of the continental Count.