In 1201, William d'Estoteville (William de Stuteville) was granted, by John, a Royal licence to crenellate Totingham (Baynard Castle, Cottingham)

Licensed, with Buttercrambe, in 1201 and again in 1327. King writes "Called 'Totingham', but the identity with Cottingham is clinched by Hoveden, iv, 117, who calls what is evidently the same castle 'Coghingham'."

Original source is

• Rotuli Chartarum, 1199-1216 (Hardy, T.D. ed., 1837, Record Commission) p89b
  Chronica Magistri Rogeri de Houedene [Stubbs, W. (ed),1868 (London) Vol4 p117 - dated 1200]

(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;

• Coulson, C., 1994, 'Freedom to Crenellate by Licence - An Historiographical Revision' Nottingham Medieval Studies Vol38 p106n55
  King, D.J.C., 1983, Castellarium Anglicanum (London: Kraus) Vol2 p536n23

More details about licences to crenellate can be found here.

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