Baldwin III Count of Hainault
Baldwin III Count of was born about 1088.  He died in 1120.

 Yolande de Guelders De Wassenberg
Yolande de Guelders was born about 1089 in Gueldres,Rhineland,Germany.

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