Interactive tree of Geoffrey (Geoffrey 1st Duke of Brittany) de Bretagne, I

Geoffrey (Geoffrey 1st Duke of Brittany) de Bretagne, I 980–1008

Conan I (Conan the Crooked (le Tort) de Bretagne Duke of Brittany Comte d'Rennes' 'Duque de Bretagne' 'Conon' 'Duke of Brittany' 'le Tort the Crooked' and 'Count De Bretagne' le Tort Le Tort The Crooked Conan of Rennes Duke of Brittany Duke de Bretagn.. de Rennes, duc de Bretagne Berenger Duke of Brittany 927–992

Lady Ermengarde Gerberga De Anjou of Bretagne 959–992

Judicael Berengar 944–979

Berengar II of Neustria …–896