Shrewsbury was given a grant of murage dated 18/2/1380.
This was in the form of:-
Wording 
Grant to the burgesses of Shrewsbury of murage for five years. By pet. in Parl.
Granted by Richard II. (Regnal year 3). Granted at Westminster. Granted by pet. in Parl..
Details of the petition which resulted in this grant can be seen 
at this link. 
Primary Sources 
Maxwell Lyte, H.C. (ed), 1895, 
Calendar of Patent Rolls Richard II (1377-81) Vol. 1 p. 436 
online copy
Secondary Sources 
Coulson, Charles, 2009, Murage Grants (Handwritten list and notes)
Comments 
The endorsement of the petition added that a fine be made. This fine is not recorded in the calendar.
     
Record created by Philip Davis. This record created 17/01/2009. Last updated on 03/05/2012. First published online 5/01/2013.