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, and was responsible for defending it against invasions. The title often came with significant military and administrative powers. Margraves played a crucial role in the feudal system, acting as local rulers who maintained order and collected taxes. Over time, the title became less common, but it remains a part of the historical legacy of nobility in regions like Germany and Austria.