Engelbert I of Nassau-Siegen Lord of Breda, Count of Nassau-Siegen, Vianden and Diez (1370–1442) Parents Margareta von der Mark John I of Nassau-Siegen Children Philip of Nassau-Siegen John IV, Count of Nassau-Siegen Margaret of Nassau-Siegen Mary of Nassau-Siegen Henry II of Nassau-Siegen William of Nassau-Siegen Siblings John III of Nassau-Siegen John II of Nassau-Siegen Henry of Nassau-Siegen Adolf of Nassau-Siegen Johann III von Nassau Partners Johanna van Polanen
