John VI of Nassau-Dillenburg was a German nobleman born in 1536. He was a member of the House of Nassau and served as the Count of Nassau-Dillenburg from 1559 until his death in 1606. John VI was known for his efforts to promote the Protestant Reformation in his territories and for his support of the Dutch Revolt against Spanish rule. Throughout his life, John VI worked to strengthen his family's influence in the region. He was also involved in various political alliances and marriages that helped to expand the power of the Nassau family. His legacy includes contributions to the cultural and political landscape of the Netherlands.