Great Yarmouth (Great Jernemouth) was given a grant of murage dated 12/10/1417.
This was in the form of:-
Wording 
Grant to the bailiffs and burgesses of the town of Great Jernemouth of murage for three years.
Granted by Henry V. (Regnal year 5). Granted at Westminster.
Primary Sources 
Maxwell Lyte, H.C. (ed), 191?, 
Calendar of Patent Rolls Henry V (1416-22) Vol. 2 p. 123 
online copy
Secondary Sources 
Coulson, Charles, 2009, Murage Grants (Handwritten list and notes)
     
Record created by Philip Davis. This record created 20/01/2009. Last updated on 03/05/2012. First published online 5/01/2013.