Duke of Brabant
The Duke of Brabant (Dutch: hertog van Brabant, French: duc de Brabant) was the ruler of the Duchy of Brabant since 1183/1184. The title was created by the Holy Roman Emperor Frederick Barbarossa in favor of Henry I of the House of Reginar, son of Godfrey III of Leuven (who was duke of Lower Lorraine at that time).