"Grant, of special grace, to Richard Englys, king's yeoman (valletto), and his heirs of free warren in all their demense lands belonging to their manor of Upholcombe; with further grant and gift of licence to the said Richard to fortify his said manor with a wall of stone and mortar and crenellate the same."
Granted at Westminster, by privy seal.
See very similar grant of 1356, for Newenham to Richard Englissh, presumably the same person.
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.)
Significant later source are;
More details about licences to crenellate can be found here.
Please let me know if you see any errors, can add information or can otherwise help to improve this resource. Contact me