In 1335 Feb 1, Radulphus de Bloiou (Ralph de Bloyou) was granted, by Edward III, (In year 9 of his reign) a Royal licence to crenellate Colewe Heys [Coleweheys] (Colway, Lyme)

"Licence for Ralph de Bloiou to crenellate his dwelling-places (mansum) of Coleweheys, co. Dorset, and Tregewell, co. Cornwall."

Granted at Roxburgh, by privy seal.

Joint with Tregewell, Cornwall. Parker writes "Possibly Coombe-Keynes" Emery writes Colway in Lyme

Original source is

• Calendar of Patent Rolls (1334-38) p77

(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
  Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol3 pt2 p410

More details about licences to crenellate can be found here.

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