The Dukes of Berg were a noble family that ruled the region of Berg in present-day Germany. Their lineage began in the 11th century, and they played a significant role in the political landscape of the Holy Roman Empire. The dukes were known for their efforts in expanding their territory and influence through strategic marriages and alliances. In 1380, the title of Duke of Berg was officially established, and the family became prominent in the Duchy of Berg. The dukes contributed to the cultural and economic development of the region, fostering trade and supporting the arts. Their rule continued until the late 18th century when the duchy was absorbed into the Duchy of Cleves.