"Licence for Richard Foliot and his heirs to enclose the dwelling place of his manor of Grymeston, co. Nottingham, with a dyke and a wall of stone and lime and to crenellate it at their will."
Granted at Rochester,
Not identified by Parker who felt it might be Grimston Norfolk. However Grimston is a lost medieval village next to Wellow and this appears to be a licence for Wellow Castle
Original source is
(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.)
More details about licences to crenellate can be found here.
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