Burgrave, also rendered as burggrave (from Burggraf, burgravius, burggravius, burcgravius, burgicomes, also praefectus), was since the medieval period in Europe (mainly Germany) the official title for the ruler of a castle, especially a royal or episcopal castle, and its territory called a Burgraviate or Burgravate (German Burggrafschaft also Burggrafthum, Latin praefectura).
The burgrave was a "count" in rank (German Graf, Latin comes) equipped with judicial powers, under the direct authority of the emperor or king, or of a territorial imperial state—a prince-bishop or territorial lord. The responsibilities were administrative, military and jurisdictional.
A burgrave, who ruled over a substantially large territory, might also have possessed the regality of coinage, and could mint his own regional coins (see silver bracteates).
Etymologically, the word burgrave is the English and French form of the German noble title Burggraf (compounded from Burg: castle, fortress or equally fortified town and Graf: count) from Middle High German burcgrâve. The feminine form is burgravine, in German Burggräfin (from Middle High German burcgrâvin).
From the early High Middle Ages, the German Burggraf (burgrave) was the military governor or commander of a castle, similar to that of the Anglo-Norman French "castellain" and Middle English "castellan" (from castellanus).
In the mid-12th century, King Conrad III of Germany created a new quality for the title of burgrave during the German eastward colonization. They became protectors and administrators of extensive royal territories near major imperial castles, such as Meissen, Altenburg and Leisnig, and received "judicial lordship" (German: Gerichtsherrschaft). They also acted as colonizers and created their own dominions.
Under the reign of King Rudolf I of Germany, their dignity was considerably advanced. Before his time, burgraves were ranked only as counts (Graf), below the princes (Fürst), but during his reign, they began to receive the same esteem as princes.