Carmarthen (Kermerdyn) was given a grant of murage dated 24/5/1280.
This was in the form of:-
Wording
Grant to the good men of Kermerdyn of murage for eight years from the Ascension, 8 Edward I.
The like to the good men of Kardygan.
Granted by Edward I. (Regnal year 8). Granted at Westminster.
Details of the petition which resulted in this grant can be seen
at this link. 
Primary Sources
Maxwell Lyte, H.C. (ed), 1901,
Calendar of Patent Rolls Edward I (1272-81) Vol. 1 p. 371
online copy
Secondary Sources
Coulson, Charles, 2009, Murage Grants (Handwritten list and notes)
Record created by Philip Davis. This record created 09/01/2009. Last updated on 03/05/2012. First published online 5/01/2013.
