Count Baldwin (The Builder) of Hainault IV
Baldwin, known as The Builder, was born in 1108 in Mons, Hainault, Belgium.¹   He died at the age of 64 on November 13th, 1172.¹ 

 Countess Adelaide de Namur
Adelaide was born in 1110 in Namur, Wallonia, Belgium.²   She died at the age of 59 in July 1169.¹ 

 Laurette de Hainault
Laurette was born in 1137 in Hainault, Belgium.³   She died at the age of 44 on August 9th, 1181.² 

 Agnes of Hainault
Agnes was born in 1142 in Mons, Hainault, Belgium.⁴   She died at the age of 26 in 1168.⁵ 

 Yolande of Hainault
Yolande was born in 1144 in Mons, Hainault, Belgium.⁴ 

 Lawrence de Hainault
Lawrence was born in 1146 in Mons, Hainault, Belgium.⁴ 

 Count of Ostervant Godfrey de Hainault
Godfrey was born in 1148 in Mons, Hainault, Belgium.⁴ 

 Count Baldwin (The Brave) of Hainault V
Baldwin, known as The Brave, was born in 1150 in Hainault, Belgium.¹   He died at the age of 46 on December 22nd, 1196.¹