Ælfthryth, wife of Edgar the brother of Ælfthryth's first husband, Æthelwine, Ealdorman of East Anglia. Supporting the unsuccessful claim of Æthelred were his mother, the Queen dowager, Bishop Æthelwold of Winchester, and Ælfhere, Ealdorman of Mercia. On 18 March 978, while visiting Ælfthryth at Corfe Castle, King Edward was killed by servants of the Queen, leaving the way clear for Æthelred to be installed as king. Edward was soon considered a martyr, and later medieval accounts blamed Ælfthryth for his murder. According to the "Anglo-Saxon Chronicle", King Edward was murdered at Corfe Castle in 978. As the king developed into a cult figure, a
Edward IV of England Edward of York was born at Rouen in France, the second son of Richard, 3rd Duke of York (who had a strong genealogical claim to the throne of England), and Cecily Neville. He was the eldest of the four sons who survived to adulthood. He bore the title Earl of March before his father's death and his accession to the throne. Edward's father Richard, Duke of York, had been heir to King Henry VI (reigned 1422-1461) until the birth of Henry's son Edward in 1453. Richard carried on a factional struggle with the king's Beaufort relatives. He established a dominant