Heralds were originally messengers sent by monarchs or noblemen to convey messages or proclamations—in this sense being the predecessors of modern diplomats.
It was possibly due to their role in managing the tournaments of the Late Middle Ages that heralds came to be associated with the regulation of the knights' coats of arms.
[2] This practice of heraldry became increasingly important and further regulated over the years, and in several countries around the world it is still overseen by heralds.
In the United Kingdom heralds are still called upon at times to read proclamations publicly; for which they still wear tabards emblazoned with the royal coat of arms.
Heralds which were primarily ceremonial in nature, especially after the decline of chivalry, were also appointed in various nations for specific events such as a coronation as additions to the pageantry of these occasions.