Noun
king of Prussia who violently suppressed democratic movements (1795-1865)
Source: WordNetAt the time of his birth, his great-uncle Frederick William IV was king of Prussia, and his grandfather and namesake Wilhelm was acting as Regent. Source: Internet
Frederick William IV introduced the Pickelhaube for use by the majority of Prussian infantry on October 23, 1842 by a royal cabinet order. Source: Internet
King Frederick William IV of Prussia was offered the title of Emperor, but with a loss of power; he rejected the crown and the proposed constitution, leading to a temporary setback for the movement. Source: Internet