Count John VI of Nassau-Dillenburg (22 November 1536 – 8 October 1606) was the second son of William the Rich and the younger brother of William the Silent. He has a special place in the history of the Netherlands because he is the male-line forefather of the House of Orange.
John VI of Nassau-Dillenburg was a Count of Nassau in Dillenburg. Other names he had were Jan VI or Jan de Oude ("John the Elder", to distinguish him from his 2nd son, "John the Middle", and his grandson "John the Younger").
Anna Sibylla (29 September 1569 – 19 December 1576)
Mathilde (27 December 1570 – 10 May 1625), married on 24 June 1592 to Count Wilhelm V of Mansfeld-Arnstein
Albert (born and died in 1572)
Count Ernst Casimir of Nassau-Dietz (22 December 1573 – 2 June 1632). It is through Ernest Casimir that the royal family of the Netherlands are descended.
Louis Gunther (15 February 1575 – 12 September 1604)
Secondly, he married on 13 September 1580 with Kunigunde Jakobäa of Simmern (9 October 1556 – 26 January 1586), daughter of Frederick III, Elector Palatine, who bore him 4 children:
Stillborn son (19 July 1581)
Maria Amalia (27 July 1582 – 31 October 1635), married on 23 August 1600 to Count Wilhelm I of Solms-Braunsfeld-Greiffenstein
Kunigunde (12 July 1583 – 4 April 1584)
Stillborn son (23 February 1585)
Thirdly, he married on 14 June 1586 to Johannetta of Sayn-Wittgenstein (15 February 1561 – 13 April 1622), who bore him 7 children: