Maria of Nassau-Dillenburg (1568-1625) was a daughter of Count John VI "the Elder" of Nassau-Dillenburg and his first wife, Countess Elisabeth of Leuchtenberg.
Maria married John Louis I, Count of Nassau-Wiesbaden-Idstein in 1588 and was the mother of:
Margaretha (1589-1660), married in 1606 to Adolph of Bentheim
Anna Catharina (1590-1622), married in 1607 to Count Simon VII "the Pious" of Lippe
John Philip (1595-1599)
John Louis II (1596-1605).