Maria of Nassau (1491–1547)

Maria, Countess of Nassau, Katzenelnbogen, Vianden and Dietz (1 February 1491, Vianden - 1547, Siegen) was a noblewoman from the Low Countries. She was the second and youngest daughter of Johann V of Nassau-Vianden-Dietz and Elisabeth of Hesse-Marburg. She was the aunt of William the Silent.

In Siegen on 17 February 1506 she married Jobst I, Count of Holstein-Schauenburg, with whom she had 12 children, including:

• Otto, died young
• Adolph III, Elector and Archbishop of Cologne from 1547 to 1556
• Anton, Elector and Archbishop of Cologne from 1556 to 1558
• John V (c. 1512 – 1560), Count of Holstein-Schauenburg from 1531, married in 1555 to Countess Elisabeth of East Frisia (1531-1558)
• Cordula (1516-1542), married:
  1. on 8 April 1529 to Count Everwin of Bentheim (13 December 1530)
  2. in 1536 to Count Gumprecht II of Neuenahr-Alpen
• Otto IV (1517-1576), co-ruler from 1531 to 1560, ruling Count of Holstein-Schauenburg from 1560
• Jobst II (c. 1520 – 1581), ruling Lord of Gemen from 1531, married in 1561 to Elisabeth of Palland (d. 1606)
• William II (d. 1580), Provost of Hildesheim