┌─Albert I of Namur
┌─Albert II of Namur
│ │ ┌─Louis IV King of the Franks ⇒
│ │ ┌─Charles Duke of Lower Lorraine
│ │ │ └─Gerberga of Saxony ⇒
│ └─Adelaide of Lower Lorraine
│ └─Adelaide
Albert III of Namur