Baldwin III was count of Hainaut from 1098 to his death. He was son of Baldwin II, Count of Hainaut

Baldwin II, Count of Hainaut

Baldwin II of Mons was count of Hainaut from 1071 to his death. He was the younger son of Baldwin VI, Count of Flanders and Richilde, Countess of Mons and Hainaut.-History:...

 and Ida of Leuven.

History

Baldwin succeeded to the county of Hainaut in 1102. Baldwin married Yolande of Guelders at a young age. He had been betrothed to Adelaide of Maurienne, a niece of Countess Clemence of Flanders. The broken betrothal caused a scandal, and Countess Clemence brought the issue before her brother Pope Calixtus II. The pope declared that the marriage was legal and could not be dissolved.

Baldwin died at a young age of ca thirty-three in 1120, and was buried in Mons. His eldest son Balwin succeeded him as Baldwin IV, Count of Hainaut

Baldwin IV, Count of Hainaut

Baldwin IV was count of Hainaut from 1120 to his death. He was the son of Baldwin III, Count of Hainaut, and Yolande de Wassenberg.-History:...

. His younger son Gerard inherited the counties of Dodewaard and Dalen, which had been in the possession of his mother. Countess Yolande held Haunaut by rights of dower for a while, and as a regent for her son.

Countess Yolande married Godfrey II, Lord of Ribemont and Bouchain, Castellan of Valenciennes and the son of Anselm of Ribemont in ca 1120. Yolande and Godfrey II had two children:

• Godfrey III, Castellan of Valenciennes
• Berthe of Valenciennes, who married 1) Otto Count of Duras and 2) Guy de Saint-Aubert

Family

He was married with Yolande of Guelders, daughter of Gerard I, Count of Guelders. Their children were:

1. Baldwin IV, Count of Hainaut
   Baldwin IV, Count of Hainaut
   Baldwin IV was count of Hainaut from 1120 to his death. He was the son of Baldwin III, Count of Hainaut, and Yolande de Wassenberg.-History:...
   
   , married Alix (Adelaide) de Namur
   Alice of Namur
   Alice of Namur was the heiress of Namur when her brother Henry IV of Luxembourg died childless in 1196. She was the wife of Baldwin IV Count of Hainault...
   
   .
2. Gerhard of Hainault, ancestor of Counts of Dale.
3. Gertrude/Ida of Hainault, married before 9 August 1138 Roger of Tosny of Conches and Flamsted.
4. Richildis of Hainault, married: 1) Thierry d'Avesnes; 2) Everard castellan of Tournai.