William IV (William Henry; 21 August 1765 – 20 June 1837) was King of the United Kingdom of Great Britain and Ireland and King of Hanover from 26 June...

Frederick William IV (German: Friedrich Wilhelm IV.; 15 October 1795 – 2 January 1861), the eldest son and successor of Frederick William III of Prussia...

William IV, Duke of Aquitaine (937–994) William IV of Provence (died 1030) William IV of Weimar or William, Margrave of Meissen (died 1062) William IV...

William IV (Willem Karel Hendrik Friso; 1 September 1711 – 22 October 1751) was Prince of Orange from birth and the first hereditary stadtholder of all...

William IV (French: Guillaume Alexandre; 22 April 1852 – 25 February 1912) was Grand Duke of Luxembourg from 17 November 1905 until his death in 1912....

Prince Frederick in 1827, so he was succeeded by another younger brother, William IV. George was born at St James's Palace, London, on 12 August 1762, the...

William IV of Hesse-Kassel (24 June 1532 – 25 August 1592), also called William the Wise, was the first Landgrave of the Landgraviate of Hesse-Kassel...

middle of 1120. For this reason William is sometimes counted as Duke of Normandy (as either William III or William IV). William received, as the heir to the...

Frederick William IV. During the reign of his grandson Wilhelm II, he was known as Wilhelm the Great. The second son of Prince Frederick William and Louise...

William II (1307 – 26 September 1345) was Count of Hainaut from 1337 until his death. He was also Count of Holland (as William IV) and Count of Zeeland...