Newcastle-upon-Tyne was given a grant of murage dated 20/11/1402.
This was in the form of:-
Tax Remission:- of tenths, fifteenths
Other aid:- Remission of fines, amercements etc.
This is a grant which may have been used for walls but could have been used for other civic improvements.
Wording
Pardon, at the supplication of the commons of the realm by petition in Parliament, to the counties of Northumberland, Cumberland and Newcastle on Tyne and every person of them, in consideration of their losses through the Scots and the king's armies and because many ships of the town of Newcastle well victualled and armed at sea and night watches by a hundred persons on the walls are maintained at the expense of the men of the town, of all escapes of felons, fines, issues, amercements, tenths, fifteenths, debts, prests and accounts, with arrears. {Foedera.} By pet. in Parl.
Granted by Henry IV. (Regnal year 4). 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), 1905,
Calendar of Patent Rolls Henry IV (1401-05) Vol. 2 p. 181-2
online copyNational Archive SC 8/22/1090
online reference
Comments
Not for walls but for mounting watch on walls. A night watch of 100 men is a considerable outlay (even at low rates of pay it would amount to £1-2 per night). Mention of such watches is rare and, presumably, in most walled tows it would have been a civic duty of all citizens to defend the walls in case of attack, although how such a duty would be enforced is a matter for consideration. The tax remission in the surrounding counties would have effects on the income of markets (and murage) in Newcastle.
Record created by Philip Davis. This record created 23/02/2009. Last updated on 05/01/2013. First published online 5/01/2013.
