Geofroy II de Mayenne
Geofroy II was born about 0990 in Mayenne, France.  He died in 1059.

 Gervase de Chateau Gontier
Gervase de Chateau was born about 1001 in Chateau-Gontier, France.

 Geofroy III de Mayenne
Geofroy III was born about 1020 in Mayenne, France.  He died in 1077.