King-at-arms

the chief heraldic officer of a country. In England the king-at-arms was formerly of great authority. His business is to direct the heralds, preside at their chapters, and have the jurisdiction of armory. There are three principal kings-at-arms, viz., Garter, Clarencieux, and Norroy. The latter (literally north roy or north king) officiates north of the Trent.