Grimoult de Plessis
Grimoult was born about 0990 in Plessis,Normandy,France.  He died in 1047.

 Matilda de Normandie
Matilda de was born about 0954 in Normandy,France.  She died in 1005.

 Adelica Belvoir de Plessis
Adelica Belvoir was born in 1019 in St. Martin D'aubigny,Manche,Normandie,France.