In 1523 June 20, James Denton the dean (Dean Denton) was granted, by Henry VIII, (In year 15 of his reign) a Confirmation licence to crenellate (Lichfield Cathedral Close)

"Constat and exemplification, at the request of James Denton, the dean, of patent 27 Edw. I licensing Walter de Langeton, bishop of Coventry and Lichfield, to enclose with a stone wall the precincts of his and the canons' houses; and of patent 22 Edw. III. confirming the same."

Granted at Westminster,

The close was licensed in 1299, 1306, 1348 and 1523. This one a confirmation of of the previous,

Original source is

• Letters and Papers, Foreign and Domestic, of the Reign of Henry VIII Vol3 pt2 p1316 no3146.20

(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;

• Thompson, M.W., 1998, Medieval bishops' houses in England and Wales (Aldershot: Ashgate Publishing) p168
  Coulson, C., 1982, 'Hierarchism in Conventual Crenellation' Medieval Archaeology Vol26 p95

More details about licences to crenellate can be found here.

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