A claviger was the title of an office-holder found in many medieval boroughs, cities and other organisations. The term means key holder, which is derived from clavis + gerere (key + to carry). The office was retained in many localities in England and Wales until the municipal reforms instituted by the Municipal Corporations Act 1835.
The old corporation (or Assembly) was replaced in 1835 by a Mayor, High Steward, Recorder, ten Aldermen and thirty Councillors, with the usual officers