Duke Charles Frederick of Schleswig was a member of the House of Oldenburg, born in 1700. He served as the Duke of Schleswig and Holstein, regions in present-day Denmark and Germany. His reign was marked by efforts to strengthen the duchy's economy and administration. Charles Frederick was also known for his connections to the Danish monarchy and his role in the political landscape of Northern Europe during the 18th century. He passed away in 1739, leaving a legacy that influenced the region's governance and its relationship with neighboring territories.