Count Eberhard II of Nellenburg was a nobleman from the House of Nellenburg, a prominent family in medieval Swabia, located in present-day Germany. He ruled during the late 12th century and is known for his efforts to strengthen his family's influence in the region. His reign was marked by various local conflicts and alliances with neighboring lords. Eberhard II's legacy includes the construction of several fortifications, which helped secure his territory against rival factions. His descendants continued to play significant roles in the political landscape of Swabia and the broader Holy Roman Empire, contributing to the region's history.