┌─Otto I the Illustrious Duke of Saxony
┌─Henry I the Fowler King of Germany
│ │ ┌─Poppo of Grapfeld
│ │ ┌─Henry of Franconia
│ └─Hedwiga of Franconia
│ │ ┌─Eberhard of Friuli
│ └─Ingeltrude
│ └─Gisela ⇒
Otto I the Great Holy Roman Emporer
└─Matilda of Ringelheim