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William Frederick of Nassau-Dietz
William Frederick of Nassau-Dietz by Wybrand de Geest, 1632
Prince of Nassau-Dietz
Reign	13 July 1640 – 31 October 1664
Predecessor	Henry Casimir I
Successor	Henry Casimir II
Stadtholder of Friesland
Period	1640-1664
Predecessor	Henry Casimir I
Successor	Henry Casimir II
Stadtholder of Groningen and Drenthe
Period	1650-1664
Predecessor	William II
Successor	Henry Casimir II
Born	(1613-08-07)7 August 1613 Arnhem
Died	31 October 1664(1664-10-31) (aged 51) Leeuwarden
Burial	Grote of Jacobijnerkerk in Leeuwarden
Spouse	Countess Albertine Agnes of Nassau ​ ​(m. 1652)​
Issue	Amalia, Hereditary Duchess of Saxe-Eisenach Henry Casimir II, Prince of Nassau-Dietz Wilhelmina Sophia Hedwig
House	Nassau
Father	Ernest Casimir I, Count of Nassau-Dietz
Mother	Sophia Hedwig of Brunswick-Lüneburg

William Frederick (Dutch: Willem Frederik; Arnhem 7 August 1613 – Leeuwarden 31 October 1664), was Count (from 1654 Imperial Prince) of Nassau-Dietz, Stadtholder of Friesland, Groningen and Drenthe.

Biography

Family life

William Frederick was the second son of Ernest Casimir I, Count of Nassau-Dietz and Sophia Hedwig of Brunswick-Lüneburg. He married Countess Albertine Agnes of Nassau, the fifth daughter of Frederick Henry, Prince of Orange on 2 May 1652 in Cleves. They had three children:

• Amalia of Nassau-Dietz (1655-1695), married to John William III of Saxe-Eisenach
• Henry Casimir II, Count of Nassau-Dietz (1657-1696), married to Princess Henriëtte Amalia of Anhalt-Dessau
• Wilhelmina Sophia Hedwig (1664–1667)

The fact that his wife was only the fifth daughter of Frederick Henry, and that they were married after the death of her father, would later take on a special significance in the quarrel about the inheritance of the title of Prince of Orange after the death of William III of England in 1702. This was because Frederick Henry had made a provision in his will that if his male line would die out (which was the case with William III) the title of Prince of Orange would be inherited by the male issue of the line of his elder daughter Louise Henriette of Nassau. This might even have been the case without this provision, had William III not himself left the inheritance to the descendants of William Frederick in his will. The inheritance therefore came down to a clash of testaments, with the outcome that both claimants eventually took the title and divided the material inheritance.

William Frederick was a paternal grandson of John VI, Count of Nassau-Dillenburg, a younger brother of his wife's paternal grandfather William the Silent. When John died in 1606 his inheritance was divided among his five sons, one of which was William Frederick's father Ernest Casimir, who received the title of Count of Nassau-Dietz and followed his eldest brother William Louis, Count of Nassau-Dillenburg as Stadtholder of Friesland, Groningen and Drenthe in 1620. William Frederick inherited the Nassau-Dietz possessions, the county of Diez and the county of Spiegelberg (near Lauenstein) from his elder brother Henry Casimir I of Nassau-Dietz, who died childless in 1640.

Career

As a second son, William Frederick did not seem destined for the career he eventually would follow. He studied at Leiden University and the University of Groningen and subsequently took a commission in the army of the Dutch Republic, like his male ancestors and his brother. As such he was a junior partner of his future father in law and brother in law William II, Prince of Orange. However, his elder brother died in action near Hulst in 1640. As Henry Casimir was unmarried, and did not have children, William Frederick inherited his titles.

However, as the office of stadtholder was not yet hereditary, William Frederick only managed to be appointed in Friesland. The stadtholdership in Groningen and Drenthe went to Frederick Henry, not without a struggle with William Frederick, however. After Frederick Henry's death in 1647 William II succeeded his father also in these two provinces as stadtholder. Only when William II died in 1650, just a week before his son William III was born, did William Frederick obtain the stadtholdership in the other two provinces also.

At that time he might have obtained the stadtholdership in the five other provinces (Holland, Zeeland, Utrecht, Gelderland and Overijssel) also. After all, the stadtholderate was an appointive office. The elder branch of the Nassau family might have "first claim" to the office, but as the "claimant" was a newborn babe (William III), such a claim was not to be taken seriously. Yet, to avoid a quarrel with the members of that elder branch (William II's widow and mother) William Frederick did not press his personal claim, but offered to serve as lieutenant-stadtholder in the five provinces until the infant William III would come of age.

He might have been taken up on that offer, except for the events that preceded the death of William II. William had performed a military coup d'état against the States of Holland in the course of a quarrel about military policy. William Frederick had played a key role in that coup by leading the attempt to seize the city of Amsterdam by force in August, 1650. Though the attempted seizure was unsuccessful, the coup had not been. However, after William's death (Nov 1650) the Holland Regents seized their chance to revert to the status quo ante. They decided to leave the stadtholdership vacant in their province, followed by the four other provinces in which William had been stadtholder, thus inaugurating the First Stadtholderless Period. Because of his role in the coup William Frederick was politically unacceptable, not just as a stand-in for William III, but also on his own account.

The office of stadtholder was a provincial office. On the federal level William II had fulfilled the office of Captain general of the Union, like his father and uncle before him. William Frederick again would normally have been in line for this office (after all, he was a stadtholder in his own right), except for the same political awkwardness that blocked his appointment to stadtholder in Holland. Again he offered himself as lieutenant-captain-general (the function Marlborough would fulfil in England after 1702), but again the Regents decided to leave the function vacant. William Frederick did not even get the function of acting commander-in-chief (Field Marshal), which went to a noble from Holland.

This was to be the story of William Frederick's life. He tried to act as the de facto head of the Orangist party, in opposition to the States Party faction of Grand Pensionary Johan de Witt and his uncle Cornelis de Graeff, but was usually outwitted and checked by De Witt at every step. The fact that the members of the senior branch of the family were suspicious of his ambitions made his position even more difficult, even after he married into that senior branch.

Nevertheless, outside the Netherlands those ambitions met with more success. In 1654 his title of Count was "upgraded" to Imperial Prince (Reichsfürst) by the Holy Roman Emperor. Within the Empire this provided him with more prestige, which however did not translate to more prestige in the Republic.

For a while, in the late 1650s, there seemed to be a chance of becoming Commander-in-chief, as part of a political compromise, brought together by De Witt, but nothing came of it. Only during the campaign against Bernhard von Galen during the Münster occupation of East Friesland, was he entrusted with a command in the field. He was successful in the reconquest of a strategic fortress (the Deilerschans), but shortly afterward he died on 31 October 1664 in an accident with a pistol that fired unexpectedly.

Before his death he had persuaded the States of Friesland that his son Henry Casimir II (only 7 years old in 1664) should succeed him as stadtholder. The States kept their word, accepting a "regency" of the young boy's mother. The Frisian stadtholderate was made hereditary in 1675.

Ancestors

References

1. Drenthe was a self-governing territory that was not represented in the States-General of the Netherlands, but was not one of the Generality Lands either, and usually appointed the same stadtholder as Groningen.
2. Israel, J.I. (1995), The Dutch Republic: Its Rise, Greatness and Fall, 1477–1806, Oxford University Press,ISBN 0-19-873072-1 hardback, ISBN 0-19-820734-4 paperback, pp. 538–539
3. Israel, op. cit., p. 705
4. Israel, op. cit., pp. 604–605, 607
5. Israel, op. cit., pp. 707, 709
6. Israel, op. cit., pp. 717–720
7. Israel, op. cit., pp. 728–736

Sources

• (in Dutch) "Willem Frederik" in De Nederlandsche Leeuw; Maandblad van het Genealogisch-Heraldiek Genootschap. Jrg. 7, No. 12 (1889), p. 91

External links

• (in German) Wilhelm Friedrich (Fürst von Nassau-Diez, Müller, P. L., in: Allgemeine Deutsche Biographie (ADB). Bd. 43, Leipzig 1898, p. 133 ff.

• 1613 births
• 1664 deaths
• Stadtholders in the Low Countries
• People from Arnhem
• Stadtholders of Frisia