Orange-Nassau is a historical dynasty that originated in the 16th century in the region of Nassau, located in present-day Germany. The name is most commonly associated with William of Orange, a key figure in the Dutch struggle for independence from Spanish rule. The dynasty played a significant role in European history, particularly in the formation of the Dutch Republic. The House of Orange-Nassau has been linked to the monarchy of the Netherlands since the 17th century. Members of this royal family have held various titles and positions, contributing to the political landscape of Europe. Today, the current monarch of the Netherlands, King Willem-Alexander, is a descendant of this influential house.