Chief Magistrate of the ciry
An avoyer is a chief magistrate of a free imperial city or canton of Switzerland.
Who was Chief Magistrate of the Bow Street Runners
In the dictionary a mayor is "the chief executive official, usually elected, of a city, village, or town." and/or "the chief magistrate of a city or borough". Their job description is basically to run the town and do it under the law.
The chief magistrate of a Spanish town.
The archons of Athens were elected into position and had several responsibilities. The archon oversaw civic activities, the funds of the city and the political stability.
The chief magistrate of Venice or Genoa