For 10 points, name this stadtholder of the United Provinces of the Netherlands who engineered Dutch independence from Spain under the banner of the House of Orange.
He negotiated the freedom of his titular princedom from France at the Treaty of Cateau-Cambrésis, but he later found his lands confiscated when he refused to appear before the Council of Blood. One of his strategies was pre- empted by the arrival of the Sea Beggars at Brielle, which sparked the rebellion that he took charge of. He eventually became the first head of state ever assassinated with a firearm, but earlier, he opposed Perrenot Granvelle, the regent Margaret of Parma, and the Duke of Alba. For 10 points, name this stadtholder of the United Provinces of the Netherlands who engineered Dutch independence from Spain under the banner of the House of Orange.
He negotiated the freedom of his titular princedom from France at the Treaty of Cateau-Cambrésis, but he later found his lands confiscated when he refused to appear before the Council of Blood.
{William I} [or {William the Silent}; or {William of Orange}; or {Willem}, Prins Van {Oranje}; or {Willem De Zwijger}; prompt on {William}]