Town crier, mayor or council.
Presenter
no
A person who announces someone entering a room is often referred to as a "master of ceremonies" (MC) or simply an "announcer." In formal settings, such as events or ceremonies, this role may also be called a "host" or "emcee." Their primary function is to introduce individuals and maintain the flow of the event.
mair
An event planner is a person who makes invitations to a given event.
A person who sets up an event is called a party planner
A monument
A witness.
artist
diary
Allusion:a brief reference to a person, event, place, or phrase
A primary source.