Robert I de Vitre'
Robert I was born about 1087 in Vitre, Brittany, France.  He died in 1161.

 Emma de la Guerche
Emma was born in 1090.  She died at the age of 71 on April 10th, 1161.

 Robert II de Vitre'
Robert II was born in 1132 in Vitre, Brittany, France.  He died at the age of 41 on November 11th, 1173.