Aelfgifu was born around 990 and died around 1044. She was the first wife of King Cnut the Great and the mother of King Harold I. She was was the daughter of Aelfhelm, Earldorman of Northumbria. She was set aside in 1016 when Cnut married Aethelred’s widow, Emma of Normandy.
Family tree for Aelfgifu of Northampton, wife of King Cnut the Great, showing: