The constitution of Wareham underwent a change during the years 1326-1338, when the governing body of the bailiffs and commonalty were replaced by the mayor and bailiffs.
In 1585 Elizabeth granted a charter of incorporation under the name of the mayor and commonalty of Helston.
The commonalty and the nobles) was as to the person who should be chosen to be the king, although it is true that either candidate, the half-witted son of Philip II., Philip Arrhidaeus, or the posthumous son of Alexander by Roxana, opened the prospect of a long regency exercised by one or more of the Macedonian lords.
It was incorporated under the name of "Bailiff, Burgesses and Commonalty" by Edward IV.
The corporation, which was prescriptive, was entitled the mayor, jurats and commonalty of Folkestone.