In 1230/31, Will de Cavereswelle was possibly granted, by Henry III, (In year 15 of his reign) a Royal licence to crenellate Cavereswelle (Caverswall Castle)

There is insufficient evidence to be certain about this possible licence to crenellate.

Will de Cavereswelle, leave to crenellate his house at Cavereswelle. Staffs writ only. Inquisitions taken as a result of applications to the Crown for licences to alienate land.

Original source is

• C143/2/43 (Chancery: Inquisitions Ad Quod Damnum, Henry III to Richard III c1216-c1485)

(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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