Granted at York. Grant by King.

Original source is;

• Lyte, H.C. Maxwell (ed), 1903, Calendar of Patent Rolls (1317-21) p. 255 online copy

(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. Licentia is best translated as 'freedom to' not 'permission'.)

Significant later sources are;

• Emery, Anthony, 2006, Greater Medieval Houses Vol. 3 (Cambridge) p. 439
  King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol. 2 p. 478n479n50
  Blaauw, William Henry, 1861, ' Royal Licenses to Fortify Towns and Houses in Sussex' Sussex Archaeological Collections Vol. 13 p. 110-11 online copy
  Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol. 3 part 2 p. 407 online copy