William II took over as the king of the Netherlands after his father William I’s abdication. His reign witnessed the transformation of his country into a parliamentary democracy through the constitution of 1848. With F.A. van Hall as the finance minister, he helped his country attain a surplus.
William I of the Netherlands reigned as the king of the Netherlands from 1815 to 1840. Before declaring himself King of the Netherlands, William I had an influential career in the military. In 1790, he was made the Dutch States Army's general of infantry where he served under his father William V, who served as Captain-General.
William III of the Netherlands was the king of the Netherlands for four decades from 1849 to 1890. The son of King William II and Anna Pavlovna of Russia, he ascended to the throne after the death of his father. The king’s behavior was often erratic, and it is speculated he suffered from a mental disorder.