Carmarthen (Kermerdyn) was given a grant of murage dated 23/11/1318.
This was in the form of:-
Wording 
Grant, for five years, to the bailiffs and good men of Kermerdyn of murage to be levied upon all wares for sale brought into their town. By K.
Granted by Edward II. (Regnal year 12). Granted at York. Granted by K..
Primary Sources 
Maxwell Lyte, H.C. (ed), 1903, 
Calendar of Patent Rolls Edward II (1317-21) Vol. 3 p. 242 
online copy
Secondary Sources 
Coulson, Charles, 2009, Murage Grants (Handwritten list and notes)
     
Record created by Philip Davis. This record created 13/01/2009. Last updated on 03/05/2012. First published online 5/01/2013.