William II, Prince of Orange. William II was sovereign Prince of Orange and Stadtholder of Holland, Zeeland, Utrecht, Guelders, Overijssel and Groningen in the United Provinces of the Netherlands from 14 March 1647 until his death three years later.
   His only child, William III, reigned as King of England, Ireland, and Scotland. William II, Prince of Orange, was the son of Frederick Henry, Prince of Orange, and Amalia of Solms-Braunfels.
   Frederick Henry was the youngest son of William the Silent; his older half brother Maurits of Nassau was stadtholder; he was stadtholder from 1625 to 1647. The stadtholders governed in conjunction with the States-General, an assembly of representatives from each of the seven provinces, but usually dominated by the largest and wealthiest province, Holland.
   On 2 May 1641, William married Mary, Princess Royal, who was the eldest daughter of King Charles I of England, in the Chapel Royal of Whitehall Palace in London. William was fifteen, while Mary was just nine at that time.
   In 1647, his father Frederick Henry died, and William II succeeded to both his hereditary titles and his elective offices as stadtholder of five of the seven provinces: Holland, Zeeland, Utrecht, Guelders and Overijssel. The Netherlands at this time was engaged in the Eighty Years' War against Spain for its independence. Under Frederick Henry, the Netherlands had largely won the war, and since 1646 had bee
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