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John William Friso (born Aug. 14 [Aug. 4, Old Style], 1687, Dessau, Anhalt—died July 14, 1711, near Dordrecht, Neth.) was a Dutch prince of Nassau-Dietz and of Orange and stadtholder of the provinces of Friesland and Groningen. His rejection as stadtholder by five of the seven Dutch provinces in 1702 marked the return to political supremacy of the States General (national assembly). The son of Henry Casimir II, stadtholder and captain general of Friesland and...