Fastre II de Oisy
Fastre II de was born about 1075 in Oizy, Namur, Belgium.  He died in 1111.

 Richilde
Richilde was born about 1080 in Oizy, Namur, Belgium.  Richilde is no longer alive.

 Wauthier de Oisy
Wauthier de was born about 1110 in Oizy, Namur, Belgium.  He died in 1147 in Avesnes, Pas-de-Calais, France.