Charles IV, Duke of Lorraine, was born on February 18, 1604, and ruled from 1625 until his death in 1675. He was a member of the House of Lorraine and played a significant role in the political landscape of France and Germany during the Thirty Years' War. His reign was marked by efforts to strengthen his duchy and maintain its independence amid regional conflicts. As a duke, Charles IV was known for his diplomatic skills and alliances, particularly with the Habsburgs. He worked to enhance the economic stability of Lorraine and fostered cultural development in the region. His legacy includes contributions to the arts and architecture, reflecting the Baroque style of his time.