Ælgifu was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Knut Svendson. They were married, but the date and place have not been found. They had no known children.
Note 1
concubine, wife by Danish practices
Note 2
daughter of Ælfhelm, Ealdorman of York, who was killed by King Ethelred the Unready