Herald
From Tardis Wiki, the free Doctor Who reference
A herald was an officer that made official proclamations and kept records of coats-of-arms.
The herald of the Bright Nobles of Feond demanded the return of a golden dragon that produced Enamour from the city of Geath. (PROSE: The King's Dragon)
A herald was killed during the attack of the robot knights on the castle of the Sheriff of Nottingham. (TV: Robot of Sherwood)
The followers of the Book of Tomorrows believed Sarah Jane Smith was the herald that preceded the coming of aliens to Earth. (AUDIO: Fatal Consequences)