"... mansum suum vocat le Sauvey... in parochia Sancti Clementis Dacorum., Midd."
Granted at Westminster,
Coulson cites avoidance of provocation as the likely reason for Edmund obtaining this licence, relationships between the crown and London being particualrly poor at the time.
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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