Robert de Nevers
Robert de was born about 1032 in Nevers, Nievre, Bourgogne, France.  He died in 1078.

 Avise de Sable
Avise de was born about 1049 in Sable, Sarthe, Maine/Pays de la Loire, France.  Avise de is no longer alive.

 Robert II de Sable
Robert II de was born about 1068 in Sable, Sarthe, Pas de la Loire, France.  He died in 1110.

 Guy de Craon
Guy de was born about 1070 in Burton Craon, Lincolnshire, England.  He died before 1118.