"Whereas it has been shewn to the king on behalf of the abbot and convent of Waltham Holy Cross that they recovered in the king's court one William atte Ree as their bondman,and by pretext of such recovery entered into 30 acres of land, not held of the king, which the said William had acquired in fee simple, as the perquisite of their bondman, as lawful was for them to do, and whereas they fear they may be impeached on account of the said entry; pardon to them of any forfeiture of the land on account of the said acquisition and entry. Pardon also to them for acquiring from Roger Mareschall one acre of land of their fee in Waltham, and entering therein without licence. Licence also for them to crenellate the belfry of their abbey which is partly ruinous, as the king has heard. "
Granted at Burstead, by privy seal.
Licence to crenellate their belfry, which was ruinous. A licence to crenellate the abbey was granted in 1369. Coulson calls this licence 'an act of seignorial assertion'.
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