In 1327 March 5, the burgesses was granted, by Edward III, (In year 1 of his reign) a Confirmation licence to crenellate Kingston-upon-Hull (Kingston upon Hull Town Wall)

"Confirmation of a licence by the late king for the burgesses of Kingston-upon-Hull to strengthen their town with moats and a wall and to crenellate the wall; with further licence for them to crenellate their houses with stone or tile."

Granted at Westminster, by King and Council.

Confirmation of licence of 1321; with further licence for them to crenellate their houses with stone or tile.

Original source is

• Calendar of Patent Rolls (1327-30) p33

(In fact, the original source given is usually a transcription/translation of what are precious medieval documents not readily availably. It should be noted that these transcription/translations often date to the nineteenth or early twentieth centuries and that unwitting bias of transcribers may affect the translation. Care should also be taken to avoid giving modern meaning to the medieval use of certain stock words and terms.)

Significant later source are;

• Coulson, C., 1995, 'Battlements and the Bourgeoisie: Municipal Status and the Apparatus of Urban Defence' in Church, Stephen (ed), Medieval Knighthood Vol. 5 (Boydell) p163
  Coulson, C., 1994, 'Freedom to Crenellate by Licence - An Historiographical Revision' Nottingham Medieval Studies Vol38 p122

More details about licences to crenellate can be found here.

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