Arnulf I De+ Hainaut
Arnulf I De+ was born about 1085.

 Beatrix Van+ Ath
Beatrix Van+ was born about 1090 in Ath, Hainaut, Belgium.  She died before 1136.

 Eustache I De+ Hainaut
Eustache I De+ was born about 1110 in Hainaut, Belgium.  He died in 1192 in Palestine, Holy Land.