Dax was given a grant of murage dated 15/11/1244.
This was in the form of:-
Wording 
Bond to the mayor and jurats of the commune of Bayonne in 100l. at Easter next, which the king gave them in aid of the walling of their town.
The like to the citizens of Dax.
Granted by Henry III. (Regnal year 29). Granted at Westminster.
Primary Sources 
1906, 
Calendar of Patent Rolls Henry III (1232-47) Vol. 3 p. 445 
online copy
Secondary Sources 
Coulson, Charles, 2009, Murage Grants (Handwritten list and notes)
Comments 
Dax, Landes, a town in Aquitaine had Roman walls
     
Record created by Philip Davis. This record created 03/02/2009. Last updated on 05/01/2013. First published online 5/01/2013.