In 1307 Aug 24, Willielmus de Dacre (William Dacre) was granted, by Edward II, (In year 1 of his reign) a Royal licence to crenellate Dunmalloght (Dunmalloght Pele)

"Licence to William de Dacre to crenellate his dwelling-house (mansum suum) of Dunmalloght, co. Cumberland, in the Marches of Scotland."

Granted at Cumnock, by privy seal.

Iron Age Hillfort one possible site of tower/castle granted a licence to crenellate, to William Dacre, in 1307. Other possible site at NY467236 or also possibly Dacre. Pastcape record reads “A pele is recorded at Dunmalloght in 1317-18 when 10 men-at-arms and 10 hobelars were paid to guard it. Licence to crenellate had been granted in 1317. its precise location is unknown, but it is likely to be in the vicinity of Dunmallard Hill.” see also Dunwalloght. The licence is sometimes also attributed to Dacre Castle

Original source is

• Calendar of Patent Rolls (1307-13) p11

(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) p263
  King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol1 p100n83, 84
  Turner, T.H. and Parker, J.H., 1859, Some account of Domestic Architecture in England (Oxford) Vol3 pt2 p405

More details about licences to crenellate can be found here.

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