A person marked by extreme enthusiasm for or support of any cause, particularly with regard to religion.
A patriarch.
A person hired to promote a particular technology.
A person who first brought the gospel to a city or region.
An itinerant or special preacher, especially a revivalist, who conducts services in different cities or locations, now often televised.
A writer of a gospel, especially the four New Testament Gospels (Matthew, Mark, Luke, and John), usually capitalized (Evangelist).
One with an obsessive interest in something, particularly (originally derogatory) obsessive Japanese fans of anime or manga.