In 1462, Alan [Adam] Morland, parson of the church of Redmershulle was granted, by Bishop Lawrence Booth, (In year 5 of his reign) a Durham Pardon licence to crenellate Redmershulle (Redmarshall Rectors Tower)

"Has pardon for having built a tower to his rectory house and begun to crenelate it as a fortalice, without licence; and has licence to fortify the same."

Rectors tower retrospectively granted episcopal licence to crenellate, in 1462, Alan Morland, parson.

Original source is

• 1873, Report of the Deputy Keeper Public Records Vol35 p87
  Dur. Rec. cl. 3, R. 48, m. 10, no. 49

(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, 1996, Greater Medieval Houses Vol1 (Cambridge) p160
  King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol1 p141n23
  Page, Wm (ed), 1928, VCH Durham Vol3 p320
  Bates, C.J., 1891, Border Holds of Northumberland (London and Newcastle: Andrew Reid) p. xv
  Hutchinson, Wm, 1785-94, The History and Antiquities of the County Palatine of Durham Vol3 p162
  Hutchinson, Wm, 1785-94, The History and Antiquities of the County Palatine of Durham Vol1 p359

More details about licences to crenellate can be found here.

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