Eberhard II of Nellenburg was a nobleman from the House of Nellenburg, a family that played a significant role in the history of the region now known as Switzerland. He lived during the late 13th century and was known for his influence in local politics and governance. His lineage is often associated with the development of various territories in the area. Eberhard II's reign was marked by his efforts to strengthen the family's power and secure their lands. The House of Nellenburg had connections to other noble families, which helped them maintain their status. His legacy is part of the broader history of the Swiss nobility during the medieval period.