Alan III the Black of Richmond
Alan III the Black of was born about 1095.  He died on September 15th, 1146.

 Bertha of Brittany
She died before 1167.

 Constance de Brittany of Richmond
Constance de Brittany of was born about 1137.  She died in 1184.

 Conan IV la Petit of Brittany
Conan IV la Petit of was born about 1137.

 Enoguen de Rennes
Enoguen was born before 1146.

 Reginald de Brittany
Reginald was born before 1146.