(from the article `alderman`) ...body under the chairmanship of the mayor. In addition to their legislative duties, aldermen exercised judicial power in minor civil and criminal ... Found on http://www.britannica.com/eb/a-z/c/149
Coun'cil·man (koun'sĭl*m a n) noun ; plural Councilmen (- m e n). A member of a council, especially of the common council of a city; a councilor. Found on http://www.encyclo.co.uk/webster/C/170