In 1339 Oct 25, Oliverus de Denham (Oliver Dinham) was granted, by Edward III, (In year 13 of his reign) a Confirmation licence to crenellate Sampford Peverell (Sampford Peverell)

"Exemplification under the seal now in use of letters patent, dated 23 July, 11 Edward III. being a licence for Oliver de Denharn to crenellate the dwelling-place of his manor of (mansum manerii de) Sampford Peverell, co. Devon."

Granted at Westminster,

Licence to crenellate granted to Oliver Dinham in 1337 and 1339. The later an exemplification, under the seal now in use, of the previous.

Original source is

• Calendar of Patent Rolls (1338-40) p326

(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;

• Emery, Anthony, 2006, Greater Medieval Houses Vol3 (Cambridge) p695
  Higham, R. A., 1988, 'Devon Castles: an annotated list' Proceedings of the Devon Archaeological Society Vol46 p146
  Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol3 pt2 p412

More details about licences to crenellate can be found here.

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