Question: Ealdgyth, circa 992 – after 1016, modern English Edith may have been the name of the wife of Sigeferth son of Earngrim, thegn of the Seven Burghs, and later was King of England from 23 April to 30 November 1016, Edmund II, usually known as who?
Sentence (from "Edmund Ironside"): He was the son of King Æthelred the Unready and his first wife, Ælfgifu of York.
Relevant evidence: No