| | Count Alan de Bretagne 1000–1046 Bertha de Blois 1015–1085 | | | | Duke Geoffrey de Bretagne de Berenger 980–1008 Hawise de Normandy 978–1034 | | | | Duke Conan I Berenger de Bretagne 927–992 Ermangarde Martel Plantagenet de Anjou 952–992 | | |
| | | Duke Richard I of Normandy 933–996 Gunnora de Crepon 936–1031 Concubine of Normandy 935–… | | |
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| | | Odo Eudes II de Blois 983–1037 | | | | Count Odo I de Blois 950–996 Princess Bertha of Burgundy 967–1016 | | |
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