A Margrave is a historical title used in some European countries, particularly in the Holy Roman Empire. It refers to a nobleman who governed a border territory, known as a march. The role of a Margrave was to protect the realm from invasions and manage the land, often with military responsibilities. Margraves were typically granted their title by a king or emperor and held significant power within their regions. They played a crucial role in the feudal system, often overseeing local lords and ensuring loyalty to the crown. Notable examples include the Margrave of Brandenburg, which later became a significant duchy in Germany.