Ki vette feleségül Ernestine Charlotte of Nassau-Schaumburg-t?

Prince William Maurice of Nassau-Siegen (18/28 January 1649 – 23 January 1691^Jul.), German: Wilhelm Moritz Fürst von Nassau-Siegen, official titles: Fürst zu Nassau, Graf zu Katzenelnbogen, Vianden, Diez, Limburg und Bronkhorst, Herr zu Beilstein, Stirum, Wisch, Borculo, Lichtenvoorde und Wildenborch, Erbbannerherr des Herzogtums Geldern und der Grafschaft Zutphen, was a count from the House of Nassau-Siegen, a cadet branch of the Ottonian Line of the House of Nassau. He served as an officer in the Dutch States Army. In 1664, he was elevated to the rank and title of prince. In 1679, he became Fürst of Nassau-Siegen, a part of the County of Nassau.

William Maurice is described as a man of integrity, but not a man of above-average talent.