┌─Étienne-Henri of Blois
Odo of Blois
│ ┌─Richard II the Good of Normandy ⇒
│ ┌─Robert I the Magnificent of Normandy
│ │ └─Judith de Rennes ⇒
│ ┌─William I King of England
│ │ └─Herleve of Falaise
└─Adela of Blois
│ ┌─Baldwin IV of Flanders ⇒
│ ┌─Baldwin V of Flanders
│ │ └─Otgive of Luxembourg ⇒
└─Matilda of Flanders
│ ┌─Robert II the Pious King of the Franks ⇒
└─Adela of France
└─Constance of Arles