Waleran IV (died 1279) was the duke

Duke

A duke or duchess is a member of the nobility, historically of highest rank below the monarch, and historically controlling a duchy...

 of Limburg

Duchy of Limburg

The Duchy of Limburg, situated in the Low Countries between the river Meuse and the city of Aachen, was a state of the Holy Roman Empire. Its territory is now divided between the Belgian provinces of Liège and Limburg , the Dutch province of Limburg , and a small part of North Rhine-Westphalia in...

 from 1247 to his death. He was the son and successor of Henry IV

Henry IV of Limburg

Henry IV was the duke of Limburg and count of Berg from 1226 to his death. He was the son of Waleran III, count of Luxembourg and duke of Limburg, and Cunigunda, daughter of Frederick I, Duke of Lorraine....

 and Ermengarde, count

Count

A count or countess is an aristocratic nobleman in European countries. The word count came into English from the French comte, itself from Latin comes—in its accusative comitem—meaning "companion", and later "companion of the emperor, delegate of the emperor". The adjective form of the word is...

ess of Berg

Berg (state)

Berg was a state – originally a county, later a duchy – in the Rhineland of Germany. Its capital was Düsseldorf. It existed from the early 12th to the 19th centuries.-Ascent:...

.

He played a great part in the politics of the Great Interregnum in Germany

Germany

Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. He left the Hohenstaufen

Hohenstaufen

The House of Hohenstaufen was a dynasty of German kings in the High Middle Ages, lasting from 1138 to 1254. Three of these kings were also crowned Holy Roman Emperor. In 1194 the Hohenstaufens also became Kings of Sicily...

 fold and supported William II of Holland as king. He was sent in an embassy to Henry III of England

Henry III of England

Henry III was the son and successor of John as King of England, reigning for 56 years from 1216 until his death. His contemporaries knew him as Henry of Winchester. He was the first child king in England since the reign of Æthelred the Unready...

 and after William's death, supported Henry's brother Richard

Richard, 1st Earl of Cornwall

Richard of Cornwall was Count of Poitou , 1st Earl of Cornwall and German King...

, earl

Earl

An earl is a member of the nobility. The title is Anglo-Saxon, akin to the Scandinavian form jarl, and meant "chieftain", particularly a chieftain set to rule a territory in a king's stead. In Scandinavia, it became obsolete in the Middle Ages and was replaced with duke...

 of Cornwall

Cornwall

Cornwall is a unitary authority and ceremonial county of England, within the United Kingdom. It is bordered to the north and west by the Celtic Sea, to the south by the English Channel, and to the east by the county of Devon, over the River Tamar. Cornwall has a population of , and covers an area of...

, as king. In 1272, he was party to the nobles who offered the crown to Ottokar II of Bohemia

Ottokar II of Bohemia

Ottokar II , called The Iron and Golden King, was the King of Bohemia from 1253 until 1278. He was the Duke of Austria , Styria , Carinthia and Carniola also....

 and then Rudolph of Habsburg.

In 1252, he intervened in the War of the Succession of Flanders and Hainault

War of the Succession of Flanders and Hainault

The War of the Succession of Flanders and Hainault was a series of feudal conflicts in the mid-thirteenth century between the children of Margaret II, Countess of Flanders...

, at the side of Jean d'Avesnes. After 1258, it fell out with John I of Brabant, putting an end to sixty years of good relations with the dukes of Brabant

Duchy of Brabant

The Duchy of Brabant was a historical region in the Low Countries. Its territory consisted essentially of the three modern-day Belgian provinces of Flemish Brabant, Walloon Brabant and Antwerp, the Brussels-Capital Region and most of the present-day Dutch province of North Brabant.The Flag of...

.

Waleran frequently intervened in the business of the archbishop

Archbishop

An archbishop is a bishop of higher rank, but not of higher sacramental order above that of the three orders of deacon, priest , and bishop...

 of Cologne

Archbishopric of Cologne

The Electorate of Cologne was an ecclesiastical principality of the Holy Roman Empire and existed from the 10th to the early 19th century. It consisted of the temporal possessions of the Roman Catholic Archdiocese of Cologne . It was ruled by the Archbishop in his function as prince-elector of...

 in his constant fight with the bourgeoisie

Bourgeoisie

In sociology and political science, bourgeoisie describes a range of groups across history. In the Western world, between the late 18th century and the present day, the bourgeoisie is a social class "characterized by their ownership of capital and their related culture." A member of the...

 of the city.

He had only one daughter Ermengarde, who married Reginald I of Guelders

Reginald I of Guelders

Reginald I of Guelders . was Count of Guelders from January 10 1271 until his death.He was the son of Otto II, Count of Guelders and Philippe of Dammartin....

.