After 1649, parliamentary authors have usually been distinguished as either 'de facto theorists' or 'commonwealthsmen'. De facto theory incorporated languages and ideas which are difficult to fit into current definitions of 'republicanism'. Nonetheless, the writings of Anthony Ascham, Francis Rous or John Dury were intended to support the rule of Parliament, and after January 1649 that meant the rule of republican government. The same combination of distinctive features and similarities between Ascham's and John Milton's writings could be found in Marchamont Nedham's The Case of the Commonwealth of England Stated the case of John Hall. From Rous to Hall, a surprisingly rich and varied range of ideas and values were used to support adhesion to the rule of Parliament and the Republic. These ideas were not inherently linked to a singular form of polity.