The Treachery of Elfrida - Elfrida (c. 945-1000, also Alfrida, 纜fthryth or Elfthryth) was the second wife and Queen consort of King Edgar of England (reigned 959-975) - Elfrida was alleged to have been a party to the murder of her step-son Edward the Martyr at her residence in Corfe Castle on March 18, 978. This was to place her son Ethelred on the throne as King. Elfrida believed her son's claim to the throne was superior to her step-son's because both Ethelred's parents had been crowned and consecrated. 固opFoto