Count Gerhard IV of Holstein was a nobleman who ruled during the late 13th century. He belonged to the House of Schauenburg and was known for his efforts to strengthen the power of the County of Holstein in northern Germany. His reign was marked by political maneuvering and alliances with neighboring territories. Gerhard IV's leadership contributed to the development of the region, particularly in trade and agriculture. He played a significant role in the Danish and German political landscape, navigating complex relationships with other nobles and the Danish crown. His legacy is remembered in the history of Holstein and its influence in medieval Europe.