OurNorthernRoots
Count Baldwin IV de Hainaut
1108 - 1171 (63 years)-
Name Baldwin IV de Hainaut Title Count Birth 1108 Mons, Hainaut, Belgium 
Gender Male Death 8 Nov 1171 Mons, Hainaut, Belgium Burial Collegiate Church of St. Waudru, Mons, Hainaut, Belgium Notes - Baldwin IV "le Batisseur" Count of Hainaut was born 1108 in Mons, Hainaut, Belgium. His parents were Baldwin III of Hainaut and Yolande von Wassenberg. He married Alix of Namur on 1130 in Namur, Belgium. He passed away on Nov 8 1171 in Château de Mons, Hainaut, Belgium. As he was a minor at his father's death, the regency was assumed by his mother, Countess de Flanders, who ruled the country with prudence and firmness. They had negotiated the betrothal of thier son with Alix de Namur and secured, by treaty rights of the latter, to the County of Namur. The Countess allowed her son to begin his rule in 1127. Children from this union with Alix de Namur were: i.Baldwin, died young, buried in Binche; ii.Godefroy, Count of Ostrevant, died in Mons on 16 April 6, 1159 without issue, married 15 years with Eleanor of Vermandois; iii.Baldwin V (1156 † 1195), Count of Hainaut, listed below; iv.William of Hainault, lord of Chateau-Thierry in the county of Namur, married his first wife Mahaud Lalaing, and his second wife was Avoye Saint-Sauve; v.Henry, Lord of Sebourg, of Angre and Fay. He lies in Sebourg where, on his tomb, it says "uncle of Baldwin, emperor of Constantinople", married Jeanne de Cisoing; vi.Yolande, with first husband Yves III, lord of Néelle and Falvy, Comte de Soissons, died childless in 1157 and his second wife, Hugh IV, Count of Saint-Pol; vii.Agnes, said the cripple, the first wife of Raoul, Sire de Coucy, Marle, La Fere, Crécy, Vervins, Pinon and Landousies, died before 1173; viii.Laurence, who with her second husband, gave a lot of property to the Town Hall, to the Cistercian order, diocese of Paris, where she was buried after his death on August 9, 1181, married Thierry of Ghent , last lord of Alost and Waes, with whom she was still alive in 1160 and who died childless in 1165, then his second wife shortly after 1171 with Bouchard IV, Lord of Montmorency.
Person ID I56334 OurNorthernRoots | Drew's Maternal Ancestors Last Modified 7 Aug 2026
Father Count Baldwin III of Hainaut, b. Est 1070 Mother Yolande de Wassenberg, b. Est 1090 Family ID F9862 Group Sheet | Family Chart
Family Countess Alix of Namur, b. ca 1112 d. Jul 1169 (Age ~ 57 years) Children + 1. Count Baldwin V de Hainaut, b. 1156, Mons, Hainaut, Belgium d. 17 Dec 1195, Mons, Hainaut, Belgium (Age 39 years)Family ID F20723 Group Sheet | Family Chart Last Modified 7 Aug 2026
- Baldwin IV "le Batisseur" Count of Hainaut was born 1108 in Mons, Hainaut, Belgium. His parents were Baldwin III of Hainaut and Yolande von Wassenberg. He married Alix of Namur on 1130 in Namur, Belgium. He passed away on Nov 8 1171 in Château de Mons, Hainaut, Belgium. As he was a minor at his father's death, the regency was assumed by his mother, Countess de Flanders, who ruled the country with prudence and firmness. They had negotiated the betrothal of thier son with Alix de Namur and secured, by treaty rights of the latter, to the County of Namur. The Countess allowed her son to begin his rule in 1127. Children from this union with Alix de Namur were: i.Baldwin, died young, buried in Binche; ii.Godefroy, Count of Ostrevant, died in Mons on 16 April 6, 1159 without issue, married 15 years with Eleanor of Vermandois; iii.Baldwin V (1156 † 1195), Count of Hainaut, listed below; iv.William of Hainault, lord of Chateau-Thierry in the county of Namur, married his first wife Mahaud Lalaing, and his second wife was Avoye Saint-Sauve; v.Henry, Lord of Sebourg, of Angre and Fay. He lies in Sebourg where, on his tomb, it says "uncle of Baldwin, emperor of Constantinople", married Jeanne de Cisoing; vi.Yolande, with first husband Yves III, lord of Néelle and Falvy, Comte de Soissons, died childless in 1157 and his second wife, Hugh IV, Count of Saint-Pol; vii.Agnes, said the cripple, the first wife of Raoul, Sire de Coucy, Marle, La Fere, Crécy, Vervins, Pinon and Landousies, died before 1173; viii.Laurence, who with her second husband, gave a lot of property to the Town Hall, to the Cistercian order, diocese of Paris, where she was buried after his death on August 9, 1181, married Thierry of Ghent , last lord of Alost and Waes, with whom she was still alive in 1160 and who died childless in 1165, then his second wife shortly after 1171 with Bouchard IV, Lord of Montmorency.