┌─Edward the Elder King of England ⇒
┌─Edmund King of England
│ └─Eadgifu
┌─Edgar I King of England
┌─Æthelred the Unready King of England
│ └─Ælfthryth
Alfred the Noble
│ ┌─Rollo
│ ┌─William I Longsword of Normandy
│ │ └─Poppa
│ ┌─Richard I the Fearless of Normandy
│ │ └─Sprota
└─Emma of Normandy
│ ┌─?
└─Gunnor