The House of Reuss-Köstritz is a branch of the historic House of Reuss, a German noble family that originated in the region of Thuringia. This branch was established in the 17th century and is known for its principality, which was part of the Holy Roman Empire. The family played a significant role in local governance and held various titles over the years. The Reuss-Köstritz family is particularly noted for its contributions to culture and society in the region. They were patrons of the arts and involved in various charitable activities. The family's legacy continues to be recognized in the area, with historical sites and monuments reflecting their influence.