Southampton was given a grant of murage dated 1/12/1377.
This was in the form of:-
Wording
Pardon to the burgesses of Southampton for their great expenses in fortifying that town and the loss to the realm in case of its destruction, of the yearly farm due from them at the Exchequer for two years from the present date, and of all arrears from the time of the late king's death, in order that in future they may the more gladly inhabit and fortify it against hostile attack. By pet. in Parl.
Granted by Richard II. (Regnal year 1). 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. 76
online copy
Secondary Sources
Turner, H.L., 1971, Town Defences in England and Wales (London) p. 175
Comments
Petition recorded in Rot. Parl. (Rec. Com.), ii, 346b
Record created by Philip Davis. This record created 28/01/2009. Last updated on 03/05/2012. First published online 5/01/2013.
