Gossuin III Seigneur de Mons
Gossuin III Seigneur de was born about 1115 in Mons, Hainault, Belgium.  He died in 1177.

 Beatrix de Rumigny
Beatrix de was born about 1120 in Rumigny, Ardennes, France.  She died in 1191.

 Alix de Mons
Alix de was born about 1140 in Mons, Hainault, Belgium.  She died in 1207.