Johann Wilhelm of Saxe-Eisenach was a German nobleman born in 1664. He was the Duke of Saxe-Eisenach, a small principality in the region of Thuringia. His reign lasted from 1690 until his death in 1729. Johann Wilhelm was known for his efforts to promote culture and education in his territory. During his rule, he supported the arts and established several institutions, including a university. Johann Wilhelm's leadership contributed to the development of Saxe-Eisenach as a center of learning and culture in the late 17th and early 18th centuries, leaving a lasting impact on the region.