landgrave
A landgrave, or Landgraf in German, was a title of nobility used in the Holy Roman Empire and its successor states. The title literally translates to "count of the land" and signified a ruler with significant territorial authority, often comparable to that of a duke. Landgraves held certain imperial dignities and privileges, including the right to administer justice within their territories and to mint their own coinage. Their domains were typically extensive and held directly from the Emperor, distinguishing them from lesser counts.
The office of landgrave emerged in the Middle Ages, particularly in regions like Hesse, Thuringia, and Alsace.