The title "Duke of Brabant and Limburg" refers to a historical noble title associated with the regions of Brabant and Limburg in present-day Belgium and Netherlands. The title emerged in the Middle Ages and was held by various rulers, including members of the House of Reginar and later the House of Habsburg. The duchies played significant roles in the political landscape of medieval Europe. The Duke of Brabant was known for its influence in trade and commerce, particularly in cities like Brussels and Antwerp. The title of Duke of Limburg was often linked to territorial disputes, especially during the Burgundian Netherlands period. Both duchies eventually became part of larger political entities, losing their independent status over time.