"Edward by the grace of God King of England, Lord of Ireland and Duke of Aquitaine, to all to whom these letters come, greetings.
Know that we have granted on behalf of ourselves and our heirs that our beloved and faithful Stephen of Penchester and Margaret his wife that they may fortify and crenellate their house [domum] at Allington in the county of Kent with a wall of stone and lime, and that they and their heirs may hold it, thus fortified and crenellated, for ever, without let or hinderance of us or our heirs or any of our officials. In witness whereof we have caused these our letters to be made patent.
Witnessed by myself at Westminster on the twenty-third day of May in the ninth year of our reign.
Signed and sealed by Edward I"
Granted at Westminster, by King.
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.
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