Hugh III of Oisy
Hugh was born about 1078 in Oisy, Namur, Belgium.  He died in 1141.

 Hildegarde of Mons
Hildegarde was born about 1080 in Mons, Hainault, Belgium.

 Simon of Oisy
Simon was born about 1115 in Oisy, Namur, Belgium.  He died in 1171.