In 1328, Ricardus de Merton (Richard de Merton) was supposedly granted, by Edward III, (In year 2 of his reign) a Royal licence to crenellate Torriton (Torrington Castle, Great Torrington)

"mansionem"

Although this document has been considered by some as a licence to crenellate the current opinion rejects this as a licence to crenellate.

Not in CPR or CChR. This one of a few licences of Edward III Parker adds to his list as issued under the Privy seal but not in the patent rolls. Emery, presumably working from information supplied by Charles Coulson, writes this was an application for a licence, the licence not actually being issued until 1340.

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 p422

More details about licences to crenellate can be found here.

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