Mary of Nassau-Siegen German countess (1418-1472) (1418–1472) Parents Johanna van Polanen Engelbert I of Nassau-Siegen Children Mary of Nassau-Wiesbaden-Idstein Anne of Nassau-Wiesbaden-Idstein John of Nassau-Wiesbaden-Idstein Philip of Nassau-Idstein Engelbert of Nassau-Wiesbaden-Idstein Adolf III of Nassau-Wiesbaden Siblings Philip of Nassau-Siegen Margaret of Nassau-Siegen John IV, Count of Nassau-Siegen Henry II of Nassau-Siegen William of Nassau-Siegen Partners John of Nassau-Wiesbaden-Idstein
