The keryx of ancient Greece was a sacred figure — killing a herald was an act of war against the gods themselves.
Voices of Authority Across the Ages
The herald is one of the oldest professional roles in recorded history. In societies where literacy was rare and long-distance communication depended entirely on trusted human carriers, the herald occupied a position of extraordinary importance. Part diplomat, part broadcaster, part protocol officer, the herald was responsible for ensuring that the words of rulers and institutions reached their intended audiences with accuracy, dignity, and force. The history of the herald is, in many ways, the history of organized communication itself.
In ancient Greece, the keryx, or herald, was a sacred figure protected by divine law. The gods Hermes and Iris served as divine heralds in Greek mythology, carrying messages between the Olympians and between the gods and mortals. This divine association conferred a kind of inviolability on human heralds: killing or harming a herald was considered a profound sacrilege and an act of war. During the Persian Wars, heralds traveled between Greek city-states and Persian forces, announcing terms and carrying diplomatic communications under this divine protection. The Athenian herald Philippides is traditionally credited with running from Marathon to Athens to announce the Greek victory, inspiring the modern marathon race.
Medieval Heralds and the Science of Heraldry
The medieval herald evolved from a simple messenger into a sophisticated specialist in the visual language of identity, status, and honor. By the twelfth century, knights in full armor were indistinguishable on the battlefield, creating a practical need for a system of visual identification. Heraldry, the science and art of designing and interpreting coats of arms and other heraldic symbols, developed to meet this need, and heralds became its expert practitioners and official custodians.
At tournaments and on the field of battle, the herald was responsible for identifying the combatants, recording their deeds, and maintaining the official register of arms that prevented two knights from bearing identical symbols. Over time, heraldic offices became permanent royal institutions. The College of Arms, founded in England in 1484, continues to function today as the official authority on heraldic matters in England, Wales, and Northern Ireland. The Lord Lyon King of Arms performs a similar role in Scotland. These institutions represent one of the most direct surviving connections to the medieval herald tradition.
Heralds in Diplomacy and International Law
The herald's role in diplomacy contributed directly to the development of international law. The principle of diplomatic immunity, which protects envoys and ambassadors from prosecution or interference by the states to which they are accredited, derives in part from the ancient tradition of herald inviolability. Hugo Grotius, whose seventeenth-century treatise The Law of War and Peace laid the foundations of modern international law, drew explicitly on classical and medieval precedent to argue that the sanctity of heralds and diplomats was a universal principle binding on all nations.
The formal proclamation remained a central instrument of governance well into the early modern period. Royal heralds announced wars and treaties, declared rebellions and pardons, and proclaimed the accession of new monarchs. In England, the official announcement of a new sovereign by Garter King of Arms from the balcony of St. James's Palace is a tradition maintained to this day. When King Charles III acceded to the throne in 2022, the formal proclamation followed protocols established over centuries, a living link between the ancient art of the herald and the modern state.