summoner

Noun

 * 1) One who summons or evokes, particularly in legal contexts.
 * 2)  An apparitor; An officer of an ecclesiastical court whose job it was to deliver a summons to an offending member of the diocese.
 * 3) A small bell for summoning an employee to provide service.

Translations

 * Greek:
 * Ancient: κλητήρ
 * Polish: przywoływacz, przyzywacz
 * Portuguese: evocador, invocador