Bristol was given a grant of murage dated 5/11/1412.
This was in the form of:-
Wording 
Grant to the mayor, bailiffs and good men of Bristol of murage for twelve years.
Granted by Henry IV. (Regnal year 14). Granted at Westminster.
Primary Sources 
Maxwell Lyte, H.C. (ed), 1909, 
Calendar of Patent Rolls Henry IV (1408-13) Vol. 4 p. 449 
online copy
Secondary Sources 
Coulson, Charles, 2009, Murage Grants (Handwritten list and notes)
     
Record created by Philip Davis. This record created 19/01/2009. Last updated on 03/05/2012. First published online 5/01/2013.