Robert II+ De Vitre
Robert II+ De was born in 1095.  He died at the age of 59 in 1154.

 Constance De+ Mayenne
Constance De+ was born about 1100.

 Robert III+ De Vitre
Robert III+ De was born about 1118 in Brittainy, Normandy, France.  He died on November 11th, 1173.