Ernest Casimir I, Count of Nassau-Dietz

Ernest Casimir I
Ernest Casimir I
	Portrait by Wybrand de Geest
Count of Nassau-Dietz
Reign	8 October 1606 – 2 June 1632
Successor	Henry Casimir I
Stadtholder of Friesland
Reign	13 July 1620 – 2 June 1632
Predecessor	William Louis
Successor	Henry Casimir I
Stadtholder of Groningen and Drenthe
Reign	23 April 1625 – 2 June 1632
Predecessor	Maurice of Orange
Successor	Henry Casimir I
Born	Ernst Casimir; 22 December 1573; Dillenburg, Nassau-Dillenburg
Died	2 June 1632 (aged 58); Roermond, Duchy of Guelders
Burial	Grote of Jacobijnerkerk
Spouse	Sophia of Brunswick-Lüneburg
Issue	Henry Casimir I of Nassau-Dietz; William Frederick of Nassau-Dietz;
House	House of Nassau-Dietz
Father	John VI of Nassau-Dillenburg
Mother	Elisabeth of Leuchtenberg

Ernest Casimir I (22 December 1573 – 2 June 1632) was a Count of Nassau-Dietz and Stadtholder of Friesland, Groningen and Drenthe.

Biography

He was the 11th child of John VI, Count of Nassau-Dillenburg, and Countess Elisabeth of Leuchtenberg. After the death of his father, his counties Nassau-Dillenburg, Nassau-Siegen, Nassau-Dietz, and Vianden were divided among his five living sons. Ernest Casimir followed him as Count of Nassau-Dietz. In 1631, he inherited the small county of Spiegelberg near Lauenstein.

Ernest Casimir was primarily known as an outstanding military leader during the Eighty Years' War. He served under Maurice of Nassau, Prince of Orange, in the siege of the cities of Steenwijk and Oldenzaal, and Frederick Henry, Prince of Orange, during the Siege of Groenlo and the Siege of 's-Hertogenbosch. As Stadtholder of Groningen, he founded the Nieuweschans fortress in 1628. Although he owned little in Friesland, he was popular there, and people granted his heir the right to rule after his death.

He was killed by a bullet at the siege of Roermond while he was inspecting the trenches in June 1632. His son, Henry Casimir I, succeeded him as count of Nassau-Dietz and as Stadtholder of Friesland, Groningen and Drenthe.

Family

In 1607, Ernest Casimir married Sophia Hedwig of Brunswick-Lüneburg, daughter of Henry Julius of Brunswick-Lüneburg. They had nine children:

stillborn daughter (1608)
stillborn son (1609)
unnamed son (1610)
Henry Casimir I, Count of Nassau-Dietz (21 January 1612 – 13 July 1640)
William Frederick, Prince of Nassau-Dietz (7 August 1613 – 31 October 1664), married Albertine Agnes of Nassau
Elizabeth (25 July – 18 September 1614)
John Ernest (29 March – May 1617)
Maurice (21 February 1619 – 18 September 1628)
Elizabeth Friso (25 November 1620 – 20 September 1628)

Ancestors

Ancestors of Ernest Casimir I, Count of Nassau-Dietz

16. Jan IV of Nassau

8. John V of Nassau-Dillenburg

17. Maria of Loon-Heinsberg

4. William I of Nassau-Dillenburg

18. Henry III of Upper Hesse

9. Elisabeth of Hesse-Marburg

19. Anna of Katzenelnbogen

2. John VI of Nassau-Dillenburg

20. Henry IX of Stolberg

10. Bodo VIII of Stolberg-Wernigerode

21. Matilda of Mansfeld

5. Juliana of Stolberg

22. Philip I of Eppstein-Königstein

11. Anna of Eppstein-Königstein

23. Louise de la Marck

1. Ernest Casimir I of Nassau-Dietz

24. Frederick V of Leuchtenberg

12. John IV of Leuchtenberg

25. Dorothea of Rieneck

6. George III of Leuchtenberg

26. Günther XXXVIII of Schwarzburg

13. Margaret of Schwarzburg

27. Catherine of Querfurt

3. Elisabeth of Leuchtenberg

28. Albert III Achilles

14. Frederick I of Brandenburg-Ansbach

29. Anna of Saxony

7. Barbara of Brandenburg-Ansbach-Kulmbach

30. Casimir IV of Poland

15. Sophia Jagiellon of Brandenburg-Ansbach

31. Elizabeth of Austria

References

External links

Works by or about Ernest Casimir I in libraries (WorldCat catalog)

Regnal titles
Ernest Casimir I, Count of Nassau-Dietz House of Nassau-Dietz Born: 22 December 1573 Died: 2 June 1632
New creation	Count of Nassau-Dietz 1606–1632	Succeeded by Henry Casimir I
Political offices
Preceded by William Louis	Stadtholder of Friesland 1620–1632	Succeeded by Henry Casimir I
Preceded by Maurice of Orange	Stadtholder of Groningen and Drenthe 1625–1632	Succeeded by Henry Casimir I

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