Granted at York. Grant by King.

Original source is;

• Lyte, H.C. Maxwell (ed), 1898, Calendar of Patent Rolls (1313-17) p. 566 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;

• Baugh, G.C. (ed), 1985, VCH Shropshire Vol. 11 p. 312
  King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol. 2 p. 439n103
  Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol. 3 part 2 p. 407 online copy

Charlton, John, first Lord Charlton of Powys (d. 1353)’

Biographical source include;

• J. F. A. Mason, 2004, ‘Charlton, John, first Lord Charlton of Powys (d. 1353)’ Oxford Dictionary of National Biography (Oxford University Press) online copy (subscription may be needed)