Counts of Hainaut

House of Reginar

The House of Reginar (later known as the House of Brabant) was a kin-group in Lotharingia during the Carolingian and Ottonian centuries. They were the first dynasty of the County of Hainault and they supplied two Dukes of Lorraine.

Armorial of Reginar
Following the death of Charles the Fat, the Reginarids began a long fight with the Conradines for supremacy in Lotharingia. They triumphed in 910 with the election of Charles the Simple as king. It was the combined forces of Bruno I of Lorraine and the Carolingians of West Francia that finally broke the Reginarids’ hold on power. In 958, Reginar III had his lands confiscated and redistributed.

However, the Reginarids supported Lothair of France against Otto II, but then made a deal with the latter in 978 and regained Mons in 998. Nonetheless, the Reginarids were no longer the force they once were. However, their descendants in Mons and Louvain continued the family spirit of opposition to the king.

Gilbert Count of the Maasgau and Founder of the House of Reginar

Kidnapped (and married in Aquitaine) a daughter of Lothair I Holy Roman Emperor

Reginar I (aka: Reginar Longneck) Duke of Lorraine (910 – 915/6)

married Hersinda (or Alberada) possibly a daughter of Charles the Bald:

Gilbert Duke of Lorraine (915/6 – 939)

Reginar II Count of Hainaut (915/6 – 932)

married Adelaide of Burgundy daughter of Richard Duke of Burgundy

Reginar III Count of Hainaut (940 – 958)

Reginar IV Count of Mons (973 – 974, 998 – 1013)

Lambert 1st Count of Leuven (1003 – 1015)

Balderic, Bishop of Utrecht

Frederick, Archbishop of Mainz

daughter, married Berengar Count of Namur

House of Louvain

The house has produced a queen-consort of England in the form of Adeliza of Leuven, who married Henry I of England, the future Dukes of Brabant, a marriage into the House of Percy and an illegitimate branch through which would rise as the houses of Bruce and subsequently the Kings of Scotland, the Kings and Queens of England.

Counts of Hainaut

The Count of Hainaut was the ruler of the county of Hainaut.

· Reginar I (900-915)

· Reginar II (915-after 932)

· Reginar III (940-958) 939 swore fealty to the King to be confirmed as Count

The county was divided between Mons and Valenciennes in 958 after Reginar III’s exiled to Bohemia.

County of Hainaut

A historical lordship within the medieval Holy Roman Empire, with its capital at Mons. It consisted of what is now the Belgian province of Hainaut and the southern part of the French department of Nord.


Coat of arms of the county of Hainaut.

Its important cities were Mons (modern day Bergen), Cambrai and Charleroi.
In Roman Imperial times, Hainaut was for the most part situated in the civitas of the Belgic Nervii. As the empire lost control, the entire region came under the lordship of the Salian Franks. By the time of Charlemagne, the Frankish empire had been declared a new “Holy” Roman Empire.

The County of Hainaut was formally established about 900 in the Lotharingian part of the Frankish ruled lands, when Duke Reginar I of Lorraine, a grandson of Frankish Emperor Lothair I, took the title “Count of Hainaut”. After the death of the last Carolingian king in East Francia, Louis the Child in 911, Duke Reginar joined the West Frankish realm under King Charles the Simple. His son and successor, Duke Gilbert, in turn submitted himself to the German king Henry the Fowler in 925, where after the Duchy of Lotharingia remained a part of the eastern Frankish kingdom which would become Germany, but on the border with the western kingdom which would become France.

Following Gilbert’s death in 939, his successors from the House of Reginar failed to retain the ducal title, but continued to rule over the Hainaut region. After Count Reginar III had unsuccessfully rebelled against Duke Bruno the Great, he was deposed and banned in 958, at which time the county was then divided between the Count Mons and the Margrave of Valenciennes. However, in 998 the Reginars regained partial control as the Count of Mons, which they held until the death of Count Herman in 1051. On the re-marriage of Count Herman’s widow to Count Baldwin of Flanders Mons passed to the House of Flanders who had already acquired Valenciennes, thus the County of Hainaut was once again united.


County of Hainaut

Count of Hainaut

Gilbert Count of the Maasgau,_Count_of_the_Maasgau

Reginar I Duke of Lorraine,_Count_of_Hainaut

Reginar II Count of Hainaut,_Count_of_Hainaut

Reginar III Count of Hainaut,_Count_of_Hainaut

Veldenz lion

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