Fort Casimir

Fort Casimir was a Dutch settlement in 17th century colonial province of New Netherland. It was located on a no-longer existing barrier island at the end of Chestnut Street in what is now New Castle, Delaware. The trading post was named for Ernst Casimir of Nassau-Dietz, count of Nassau-Dietz and Stadtholder of Friesland, Groningen and Drenthe in the Netherlands.