Page "Constitutional status of Cornwall" Paragraph 74

* The Patent Rolls which inter alia record the King and his council governing Cornwall after the creation of the Dukedom in 1337.

Examples are the inquiries into the use of the English-controlled port of Calais in 1474 ( when officials of all counties, including Cornwall, were required to submit returns ), the King granting licences to trade to people in Cornwall in 1364, the Duke of Cornwall complaining in 1371 to the King's Council about offences by some local men in Cornwall, and in 1380 the King's Council ordering the Sheriff of Cornwall to arrest and imprison an offender.