Duke Conan  I de Brittany
Duke Conan  I was born about 0950 in Bretagne, France.  Duke Conan  I is no longer alive.

 Ermengarde de Anjou
Ermengarde was born about 0952 in Anjou, France.  Ermengarde is no longer alive.

 Duke Geoffrey  I de Brittany
Duke Geoffrey  I was born about 0980 in Nantes, Bretagne, France.  He died on November 20th, 1008.