Duke Charles I, also known as Charles I of {Saxe-Weimar}, was a prominent German nobleman born in 1596. He became the Duke of {Saxe-Weimar} in 1620 and played a significant role in the {Thirty Years' War}, supporting the Protestant cause. His leadership and military strategies were crucial in various battles during this tumultuous period in European history. Charles I was known for his patronage of the arts and education, contributing to the cultural development of his duchy. He established the {University of Jena} as a center for learning and promoted the works of notable scholars and artists, leaving a lasting legacy in the region.