William IV 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 1830 until his death in 1837. The third son of George III, William succeeded h ...

(1765–1837; ) was King of the United Kingdom of Great Britain and Ireland and concurrently King of Hanover. William IV may also refer to: *

William IV, Duke of Aquitaine William IV (937 – 3 February 994), called Fierebras or Fierebrace (meaning "Proud Arm", from the French ''Fier-à-bras'' or ''Fièrebrace'', in turn from the Latin ''Ferox brachium''), was the Duke of Aquitaine and Count of Poitou from 963 ...

(937–994) *

William IV of Provence William IV (died 1030) was the Count of Provence from 1018 to his death. He was a son of William II, whom he succeeded, and a co-count with his brothers Fulk Fulk is an old European personal name, probably deriving from the Germanic ''folk'' ("pe ...

(died 1030) *

William IV of Weimar William IV, Count of Weimar (died 1062) was Margrave of Meissen from 1046 until his death. Life He was the eldest son of Count William III of Weimar from his second marriage with Oda, a daughter of Margrave Thietmar of the Saxon Eastern March. He ...

or William, Margrave of Meissen (died 1062) *

William IV of Montpellier William IV (or Guillem IV) was the Lord of Montpellier from 1058 until his death in 1068.Archibald R. Lewis, "The Guillems of Montpellier: A Sociological Appraisal", ''Viator'', 2 (1971), 159–60. He was the son of William III and Beliardis. He wa ...

() *

William IV, Count of Toulouse William IV of Toulouse ( 1040 – 1094) was Count of Toulouse, Margrave of Provence, and Duke of Narbonne from 1061 to 1094. He was the son of Pons of Toulouse and Almodis de la Marche. He was married to Emma of Mortain, daughter of Robe ...

(–1094) *

William IV, Marquis of Montferrat William IV (c. 1030 – 1100) was the fifth Marquis of Montferrat from 1084. The date of William's birth is unknown, but it most likely took place between 1030 and 1035. He was the eldest son of Otto II and Constance of Savoy. Life He first ...

(–1100) *

William IV, Count of Nevers William IV, Count of Nevers, (c. 1130 – Acre, 24 October 1168) Count of Nevers, Auxerre and Tonnerre (1161–1168). Family William was a son of William III, Count of Nevers and Ida of Sponheim, and the older brother of his successor Guy, Count o ...

(–1168) *

William IV of Forcalquier William IV, Count of Forcalquier (french: Guillaume IV d'Urgell ou Guillaume II de Forcalquier; 1130–1208) was the son of Bertrand I, Count of Forcalquier and Josserande de la Flotte. William married Adelaide de Beziers, daughter of Saura de Ca ...

(1130–1208) * William IV of Saint Omer (–1191) *

William IV, Count of Ponthieu William IV Talvas (1179 – 4 October 1221) was William III, Count of Ponthieu and William IV (of the house of Belleme/Montgomery). He was Count of Ponthieu, ruler of a small province in northern France that fell under the suzerainty of the du ...

(1179–1221) *

William IV, Count of Jülich William IV, Count of Jülich (c. 1210 – 16 March 1278) was the son and heir of William III of Jülich and Mathilde of Limburg, daughter of Waleran III, Duke of Limburg.Walther Möller, ''Stammtafeln westdeutscher Adelsgeschlechter im Mittelalter ...

(–1278) *

William IV, Lord of Douglas William, Lord of Douglas (died 19 July 1333) was a short-lived Kingdom of Scotland, Scottish nobleman, the son of Sir James Douglas, Lord of Douglas, James Douglas and an unknown mother. Little is known of Lord Douglas's life which, after his fa ...

(died 1333) *

William IV of Holland 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. He succeeded his father, Count William I of Hainaut. While away fighting in Prussia, the Fr ...

or William II, Count of Hainaut (1307–1345) * William IV of Hainault or William II, Duke of Bavaria (1365–1417) *

William IV, Lord of Egmont William IV of Egmont (''Dutch'': Willem van Egmond) (26 January 1412 – 19 January 1483) was Lord of Egmond, IJsselstein, Schoonderwoerd and Haastrecht and Stadtholder of Guelders. Biography William was a son of John II, Lord of Egmond and ...

(1412–1483) *

William IV, Duke of Brunswick-Lüneburg William (German: ''Wilhelm'') called William the Younger (''german: Wilhelm der Jüngere'', c. 1425 – 7 July 1503) was duke of Brunswick-Lüneburg and ruled over the Wolfenbüttel and Göttingen principalities. The eldest son of William the V ...

(–1503) *

William IV, Duke of Jülich-Berg William IV of Jülich-Berg (9 January 1455 – 6 September 1511) was the last ruler of the Duchy of Jülich-Berg. Life William was the son of Gerhard VII, Duke of Jülich-Berg and Sophie of Saxe-Lauenburg. When his father died in 1475, Will ...

(1455–1511) *

William IV, Princely count of Henneberg-Schleusingen Princely count William IV of Henneberg-Schleusingen (29 January 1478 – 24 January 1559), a member of the House of Henneberg, was a ruler of the Principality of Henneberg, within the Holy Roman Empire. The son of William III of Henneberg, Willi ...

(1478–1559) *

William IV, Duke of Bavaria William IV (german: Wilhelm IV; 13 November 1493 – 7 March 1550) was Duke of Bavaria from 1508 to 1550, until 1545 together with his younger brother Louis X, Duke of Bavaria. He was born in Munich to Albert IV and Kunigunde of Austria, a daugh ...

(1493–1550) *

William IV, Landgrave of Hesse-Kassel William IV of Hesse-Kassel (24 June 153225 August 1592), also called ''William the Wise'', was the first Landgrave of the Landgraviate of Hesse-Kassel (or Hesse-Cassel). He was the founder of the oldest line, which survives to this day. Life Lan ...

(1532–1592) *

William IV, Prince of Orange 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 the United Provinces of the Netherlands from 1747 until his death in 1751. During his whole l ...

(1711–1751) *

William IV, Grand Duke of Luxembourg William IV (Guillaume Alexander; ''French: Guillaume Alexandre''; 22 April 1852 – 25 February 1912) reigned as the Grand Duke of Luxembourg from 17 November 1905 until his death. He succeeded his father, Adolphe. William was a Protestant, the ...

(1852–1912)

See also