William II (Willem Frederik George Lodewijk, anglicized as William Frederick George Louis; 6 December 1792 – 17 March 1849) GCB was King of the Netherlands, Grand Duke of Luxembourg, and Duke of Limburg.William II was the son of William I and Wilhelmine of Prussia. When his father proclaimed himself king in 1815, he became Prince of Orange and heir apparent of the Kingdom of the Netherlands. With the abdication of his father on 7 October 1840, William II became king.