Goswin III De+ Mons
Goswin III De+ was born before 1127 in Mons, Hainaut, Belgium.  He died in 1177.

 Beatrix De+ Rumigny
Beatrix De+ was born about 1135 in Rumigny, Ardennes, France.  She died in 1191.

 Alix De+ Mons
Alix De+ was born about 1170.