In 1336 Nov 16, Henricus, Episcopus Lincoln (Bishop Burghersh) was granted, by Edward III, (In year 10 of his reign) a Royal licence to crenellate Stowe [St Mary] (Stow Bishops Palace)

"Licence for Henry bishop of Lincoln to crenellate the dwelling-places of his manors (mansum manerii) of Stow St. Mary and Nettelham, co. Lincoln, and Lydyngton, co. Rutland."

Granted at Bothwell, by King.

Joint with Nettleham and Liddington. Turner and Parker put the St Mary with Nettleham, the PRO put it with Stow

Original source is

• Calendar of Patent Rolls (1334-38) p330

(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) p167
  Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol3 pt2 p411

More details about licences to crenellate can be found here.

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