Baudouin III Count of Hainault
Baudouin III Count of was born in 1087 in Hainault, Belgium.  He died at the age of 33 in 1120.

 Yolande von Wassenberg , of Guelders
Yolande von was born in 1089 in Wassenberg, Rheinland, Prussia.

 Baudouin IV "Le Batisseur" Count of Hainault
Baudouin IV "Le Batisseur" Count of was born in 1108 in Mons, Hainault, Belgium.  He died at the age of 63 on November 8th, 1171.

 Ida (Gertrude) of Hainault
Ida (Gertrude) of was born about 1109 in Hainault, Belgium.  She died after 1162 in Garsington, Headington, Oxfordshire, England.

 Richilda of Hainault
Richilda of was born about 1117 in Hainault, Belgium.