John Maurice's leadership served in 1650–1651 to bring about a split in the Siegerland along denominational lines. Under Wilhelm Hyacinth of Nassau-Siegen, violence broke out between the two denominational groups. When on 29 March 1707 townsman Friedrich Flender was killed, Wilhelm Hyacinth was himself unseated and furthermore driven out of the town. Wilhelm Hyacinth was the last in the line of Nassau-Siegen's Catholic rulers, dying in 1743. Already in 1734, though, the Reformed line had died out, too, with Friedrich Wilhelm's death, leading Charles VI, Holy Roman Emperor to transfer power in the territory to the Prince of Orange and the Prince of Nassau-Diez. Under their leadership, mining, the main source of wealth, blossomed, along with agriculture and silviculture. When Prince William of Orange refused to join the Confederation of the Rhine, founded by Napoleon, he found himself unseated by the French leader and the Siegerland passed to the Grand Duchy of Berg. After Napoleon's downfall in 1813, however, William I regained his former German inheritances, but in 1815 he ceded them to the Kingdom of Prussia for the Grand Duchy of Luxembourg. Siegen was assigned to the Siegen district, first in the Koblenz region, and as of 1817 in the Arnsberg region within the Prussian Province of Westphalia.