Frederick William IV
Noun
Meaning
king of Prussia who violently suppressed democratic movements (1795-1865)
Source: WordNetExamples
At 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.
Frederick William IV introduced the Pickelhaube for use by the majority of Prussian infantry on October 23, 1842 by a royal cabinet order.
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.